21-sun.com Website Information

Daily Unique Visits: 31,958

Daily Page Views: 191,748

Income Per Day: $383

Estimated Value: $275,760

This website is located in China and is using following IP address 123.129.249.133. See the complete list of popular websites hosted in China.

21-sun.com is registered under .COM top-level domain. Please check other sites in .COM zone.

Website 21-sun.com is using the following name servers:

dns2.hichina.com
dns1.hichina.com

and is probably hosted by HWCSNET Huawei Cloud Service data center, CN. See the full list of other websites hosted by HWCSNET Huawei Cloud Service data center, CN.

The highest website 21-sun.com position in Alexa rank database was 5222 and the lowest rank position was 984982. Current position of 21-sun.com in Alexa rank database is 44878.

Desktop speed score of 21-sun.com (0/100) shows that the page desktop performance can be improved.

Mobile usability score of 21-sun.com (96/100) is better than the results of 46.59% of other sites and means that the page is mobile-friendly.

Mobile speed score of 21-sun.com (20/100) is better than the results of 4.48% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.

21-sun.com Alexa Rank

The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.

21-sun.com whois

WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.

Domain Name: 21-SUN.COM
Registry Domain ID: 26647987_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2021-04-12T01:12:13Z
Creation Date: 2000-05-09T06:33:16Z
Registry Expiry Date: 2022-05-09T06:33:16Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: DNS1.HICHINA.COM
Name Server: DNS2.HICHINA.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2021-04-24T22:41:35Z

21-sun.com server information

Servers Location

21-sun.com desktop page speed rank

Last tested: 2019-12-02

Desktop Speed Bad

0/100

21-sun.com Desktop Speed Test Quick Summary

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priority - 80Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

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priority - 2Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

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priority - 217Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 2.1MiB (94% reduction).

Compressing and resizing http://resource.21-sun.com/internet/used2013/image…20160516180126_235.jpg could save 661.9KiB (99% reduction).
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Compressing and resizing http://product.21-sun.com/uploadfiles//image/2015/12/20151216095952_10.jpg could save 23.1KiB (94% reduction).
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Losslessly compressing http://resource.21-sun.com/internet/used2013/image…20160518100216_967.jpg could save 8.1KiB (17% reduction).
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Losslessly compressing http://m.21-sun.com/resources/phone/img/l_i01.png could save 2KiB (35% reduction).
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Losslessly compressing http://m.21-sun.com/resources/phone/img/m_i04.png could save 1.8KiB (35% reduction).
Losslessly compressing http://m.21-sun.com/resources/phone/img/m_i03.png could save 1.7KiB (36% reduction).
Losslessly compressing http://m.21-sun.com/resources/phone/img/m_i01.png could save 1.6KiB (36% reduction).
Losslessly compressing http://m.21-sun.com/resources/phone/img/l_i04.png could save 1.6KiB (35% reduction).
Losslessly compressing http://m.21-sun.com/resources/phone/img/l_i02.png could save 1.5KiB (37% reduction).
Losslessly compressing http://m.21-sun.com/resources/phone/img/l_i03.png could save 1.4KiB (34% reduction).
Losslessly compressing http://m.21-sun.com/resources/phone/img/sun.png could save 1.1KiB (27% reduction).
Losslessly compressing http://m.21-sun.com/resources/phone/img/ba01_h.png could save 939B (72% reduction).
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priority - 56Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 8 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

http://s4.cnzz.com/stat.php?id=1254937551&web_id=1254937551
http://c.cnzz.com/core.php?web_id=1254937551&t=z
http://m.21-sun.com/resources/modules/seajs/sea.js
http://m.21-sun.com/resources/phone/seajs.config.js
http://m.21-sun.com/scripts/jquery-1.7.min.js

Optimize CSS Delivery of the following:

http://m.21-sun.com/resources/grid/grid12.css
http://m.21-sun.com/resources/icon/icon.css
http://m.21-sun.com/resources/phone/css/style.css
http://m.21-sun.com/resources/phone/css/responsive.css
http://m.21-sun.com/resources/phone/css/Pad.css
http://m.21-sun.com/resources/phone/css/Mobile.css
http://m.21-sun.com/resources/modules/tab.css
http://m.21-sun.com/resources/modules/slide.css

priority - 33Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

http://m.21-sun.com/resources/grid/grid12.css (expiration not specified)
http://m.21-sun.com/resources/icon/icon.css (expiration not specified)
http://m.21-sun.com/resources/icon/ordinary.woff (expiration not specified)
http://m.21-sun.com/resources/modules/base.js (expiration not specified)
http://m.21-sun.com/resources/modules/count.js (expiration not specified)
http://m.21-sun.com/resources/modules/jquery/1/jquery.js (expiration not specified)
http://m.21-sun.com/resources/modules/seajs/sea.js (expiration not specified)
http://m.21-sun.com/resources/modules/slide.css (expiration not specified)
http://m.21-sun.com/resources/modules/slide.js (expiration not specified)
http://m.21-sun.com/resources/modules/tab.css (expiration not specified)
http://m.21-sun.com/resources/modules/tab.js (expiration not specified)
http://m.21-sun.com/resources/modules/touch.js (expiration not specified)
http://m.21-sun.com/resources/phone/app/common.js (expiration not specified)
http://m.21-sun.com/resources/phone/app/index.js (expiration not specified)
http://m.21-sun.com/resources/phone/css/Mobile.css (expiration not specified)
http://m.21-sun.com/resources/phone/css/Pad.css (expiration not specified)
http://m.21-sun.com/resources/phone/css/responsive.css (expiration not specified)
http://m.21-sun.com/resources/phone/css/style.css (expiration not specified)
http://m.21-sun.com/resources/phone/img/ba01_h.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/ba02.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/ba03.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/ba04.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/ba05.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/ba06.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/l_i01.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/l_i02.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/l_i03.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/l_i04.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/m_i01.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/m_i02.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/m_i03.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/m_i04.png (expiration not specified)
http://m.21-sun.com/resources/phone/img/sun.png (expiration not specified)
http://m.21-sun.com/resources/phone/seajs.config.js (expiration not specified)
http://m.21-sun.com/scripts/jquery-1.7.min.js (expiration not specified)
http://pv.21-sun.com/http/stat.jsp (expiration not specified)
http://www.wajueji.com//upload/image/2016/06/20160622102315_490.png (expiration not specified)
http://c.cnzz.com/core.php?web_id=1254937551&t=z (15 minutes)
http://s4.cnzz.com/stat.php?id=1254937551&web_id=1254937551 (90 minutes)
http://resource.21-sun.com/internet/21sun_news/ima…/20160708081416_59.jpg (24 hours)
http://resource.21-sun.com/internet/used2013/image…20160516180126_235.jpg (24 hours)
http://resource.21-sun.com/internet/used2013/image…20160518100216_967.jpg (24 hours)
http://resource.21-sun.com/internet/used2013/image…20160519145554_371.jpg (24 hours)
http://resource.21-sun.com/internet/used2013/image…20160519203500_262.jpg (24 hours)
http://resource.21-sun.com/internet/used2013/image…1/20160521204853_2.jpg (24 hours)

priority - 26Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

http://21-sun.com/
http://www.21-sun.com/
http://m.21-sun.com/

priority - 16Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 157KiB (65% reduction).

Compressing http://m.21-sun.com/resources/modules/jquery/1/jquery.js could save 61.1KiB (65% reduction).
Compressing http://m.21-sun.com/scripts/jquery-1.7.min.js could save 59.3KiB (64% reduction).
Compressing http://m.21-sun.com/resources/modules/slide.js could save 9KiB (76% reduction).
Compressing http://m.21-sun.com/resources/modules/touch.js could save 6.9KiB (74% reduction).
Compressing http://s4.cnzz.com/stat.php?id=1254937551&web_id=1254937551 could save 6.4KiB (65% reduction).
Compressing http://m.21-sun.com/resources/modules/base.js could save 3.9KiB (62% reduction).
Compressing http://m.21-sun.com/resources/phone/app/index.js could save 3.4KiB (66% reduction).
Compressing http://m.21-sun.com/resources/modules/seajs/sea.js could save 3.3KiB (52% reduction).
Compressing http://m.21-sun.com/resources/phone/app/common.js could save 2.1KiB (52% reduction).
Compressing http://m.21-sun.com/resources/modules/tab.js could save 1.7KiB (53% reduction).

priority - 8Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 33% of the final above-the-fold content could be rendered with the full HTML response.

priority - 1Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 13.1KiB (44% reduction).

Minifying http://m.21-sun.com/resources/modules/slide.js could save 6.3KiB (53% reduction).
Minifying http://m.21-sun.com/resources/phone/app/index.js could save 2.5KiB (49% reduction).
Minifying http://m.21-sun.com/resources/modules/base.js could save 1.9KiB (31% reduction).
Minifying http://m.21-sun.com/resources/modules/tab.js could save 1.3KiB (41% reduction).
Minifying http://m.21-sun.com/resources/phone/app/common.js could save 1.2KiB (31% reduction).

21-sun.com Mobile Resource Breakdown

Total Resources	58
Number of Hosts	12
Static Resources	50
JavaScript Resources	14
CSS Resources	8

21-sun.com mobile page usability

Last tested: 2019-12-04

Mobile Usability Good

96/100

21-sun.com Mobile Usability Test Quick Summary

priority - 3Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 414 CSS pixels wide, but the viewport is only 411 CSS pixels wide. The following elements fall outside the viewport:

The element <li class="flex-1">精选</li> falls outside the viewport.

priority - 1Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="/news/news_con….jsp?id=157377">走向高端市场徐工北美市场持续突破</a> is close to 1 other tap targets.

The tap target <a href="/news/news_con….jsp?id=157423">重汽济南专用车公司多功能抑尘车助力章丘马拉松赛</a> and 1 others are close to other tap targets.

The tap target <a href="/product/proDetail/XG955H.htm" class="btn01">询底价</a> and 5 others are close to other tap targets.

The tap target <a href="/">首页</a> is close to 2 other tap targets.

The tap target <a href="/news/">动态</a> and 4 others are close to other tap targets.

21-sun.com HTML validation

Warnings

The “type” attribute is unnecessary for JavaScript resources.

Line: 14 Column: 1 - 55
"...lesheet"> <script type="text/javascript" src="/js/jquery.min.js"></scri..." Line: 15 Column: 1 - 50
"...</script> <script type="text/javascript" src="/js/flash.js"></scri..." Line: 16 Column: 1 - 73
"...</script> <script src="/static/webappservice/uaredirect.js" type="text/javascript"></scri..." Line: 17 Column: 1 - 31
"...</script> <script type="text/javascript">uaredi..." Line: 18 Column: 1 - 59
"...</script> <script type="text/javascript" src="/static/app/AdShow.js"></scri..." Line: 594 Column: 15 - 67
"... <script type="text/javascript" language="javascript">writef..." Line: 2214 Column: 1 - 58
"...> </body> <script type="text/javascript" src="/js/scrollLoading.js"></scri..." Line: 2215 Column: 1 - 55
"...</script> <script type="text/javascript" src="/js/superslide.js"></scri..." Line: 2216 Column: 1 - 49
"...</script> <script type="text/javascript" src="/js/sele.js"></scri..." Line: 2217 Column: 1 - 59
"...</script> <script type="text/javascript" src="/js/index_main_new.js"></scri..." Line: 2218 Column: 1 - 51
"...</script> <script type="text/javascript" src="/js/topbar.js"></scri..." Line: 2222 Column: 1 - 31
"... 返回顶部 --> <script type="text/javascript"> $("i..."

The “type” attribute for the “style” element is not needed and should be omitted.

Line: 32 Column: 1 - 23
"... </style> <style type="text/css"> .f..." Line: 2182 Column: 3 - 25
".../div> <style type="text/css"> /*对联广..." Line: 2207 Column: 1 - 23
"...</div> <style type="text/css"> #shan..."

Empty heading.

Line: 274 Column: 7 - 23
"...p"> <h1 class="logo"> <a hr..."

The “language” attribute on the “script” element is obsolete. You can safely omit it.

Line: 594 Column: 15 - 67
"... <script type="text/javascript" language="javascript">writef..." Line: 2219 Column: 27 - 118
"...lay:none"><script src="http://s17.cnzz.com/stat.php?id=2697820&web_id=2697820" language="JavaScript"></scrip..."

Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.

Line: 2 Column: 16 - 6
"...type html> <html> <head..."

Errors

CSS: “line-height”: “ 24px” is not a “line-height” value.

Line: 29 Column: 28 - 32
"...ne-height: 24px;font-..."

CSS: “font-size”: “ 18px” is not a “font-size” value.

Line: 29 Column: 44 - 48
"...font-size: 18px;} </..."

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Line: 91 Column: 81 - 108
"...="_blank"><img src="images/crm_b.png"></a></..." Line: 92 Column: 103 - 130
"...="_blank"><img src="images/crm_s.png"></a></..." Line: 113 Column: 15 - 51
"... <img src="/static/images/m_01.jpg" /> ..." Line: 117 Column: 15 - 51
"... <img src="/static/images/m_02.jpg" /> ..." Line: 121 Column: 15 - 51
"... <img src="/static/images/m_03.jpg" /> ..." Line: 134 Column: 17 - 55
"... <img src="/static/images/shangmao.jpg"> ..." Line: 146 Column: 17 - 53
"... <img src="/static/images/tbmall.jpg"> ..." Line: 189 Column: 38 - 67
"...ic-box l"><img src="images/app0912.png"></div>..." Line: 274 Column: 58 - 91
"...sun.com/"><img src="static/images/logo.png"></a> <..." Line: 345 Column: 88 - 129
"...tle="挖掘机"><img data-src="static/images/nav_01.png" > 挖掘机</..." Line: 346 Column: 85 - 126
"...tle="装载机"><img data-src="static/images/nav_02.png" > 装载机</..." Line: 347 Column: 86 - 127
"...tle="破碎锤"><img data-src="static/images/nav_03.png" > 破碎锤</..." Line: 348 Column: 67 - 108
"...le="路面机械"><img data-src="static/images/nav_04.png" > 路面机械<..." Line: 349 Column: 72 - 113
"...e="混凝土机械"><img data-src="static/images/nav_05.png" > 混凝土机械..." Line: 350 Column: 69 - 110
"...le="桩工设备"><img data-src="static/images/nav_06.png" > 桩工设备<..." Line: 351 Column: 67 - 108
"...tle="起重机"><img data-src="static/images/nav_07.png" > 起重机</..." Line: 352 Column: 61 - 102
"...itle="塔机"><img data-src="static/images/nav_08.png" > 塔机</a..." Line: 353 Column: 66 - 107
"...itle="农机"><img data-src="static/images/nav_09.png" > 农机</a..." Line: 397 Column: 88 - 123
"...="_blank"><img src="images/zl_20181126.jpg" /></a></..." Line: 640 Column: 112 - 138
"...="_blank"><img src="/images/bmz.gif"></a></..." Line: 642 Column: 34 - 60
"..._sr_lant"><img src="../img/jrtj.jpg"></div>..." Line: 684 Column: 101 - 129
"...="_blank"><img src="../img/tiewan.jpg"></a></..." Line: 769 Column: 157 - 259
"...le="约翰迪尔"><img data-src="http://resource.21-sun.com/internet/21sun_news/image/2015/09/22/20150922082059_905.jpg"></a></..." Line: 788 Column: 135 - 165
"...on.com/"> <img data-src="/images/zl.jpg"> </a> ..." Line: 789 Column: 157 - 188
"...on.com/"> <img data-src="/images/zld.jpg"> </a> ..." Line: 1076 Column: 116 - 150
"...ong.com/"><img src="/images/jingong01.gif" /></a> ..." Line: 1837 Column: 32 - 62
"...g l img1"><img src="images/tel0912.png"/></div>..." Line: 1842 Column: 32 - 62
"...g l img2"><img src="images/mes0912.png"/></div>..." Line: 1847 Column: 7 - 37
"...m"> <img src="images/app0912.png"/> ..." Line: 1854 Column: 6 - 32
"...m"> <img src="images/ewm.jpg"/> ..." Line: 1862 Column: 67 - 96
"..."img_b l"><img src="images/wb0912.png"/></a> ..." Line: 1863 Column: 90 - 119
"..."img_b l"><img src="images/tt0912.png"/></a> ..." Line: 1865 Column: 7 - 36
"...t"> <img src="images/vx0912.png"/> ..." Line: 1869 Column: 9 - 40
"...> <img src="images/shangmao.jpg"/> ..." Line: 1873 Column: 9 - 46
"...> <img src="/static/images/tbmall.jpg"/> ..." Line: 1882 Column: 111 - 147
"...po_b fix"><img src="images/ghs.png" class="l"/><p cla..." Line: 2178 Column: 58 - 116
"...t="_self"><img src="http://zhuanti.21-sun.com/cio2015/img/zpf04.jpg"></a></..."

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Line: 335 Column: 3 - 9
"... </div> <style> .na..."

Element “img” is missing required attribute “src”.

Line: 345 Column: 88 - 129
"...tle="挖掘机"><img data-src="static/images/nav_01.png" > 挖掘机</..." Line: 346 Column: 85 - 126
"...tle="装载机"><img data-src="static/images/nav_02.png" > 装载机</..." Line: 347 Column: 86 - 127
"...tle="破碎锤"><img data-src="static/images/nav_03.png" > 破碎锤</..." Line: 348 Column: 67 - 108
"...le="路面机械"><img data-src="static/images/nav_04.png" > 路面机械<..." Line: 349 Column: 72 - 113
"...e="混凝土机械"><img data-src="static/images/nav_05.png" > 混凝土机械..." Line: 350 Column: 69 - 110
"...le="桩工设备"><img data-src="static/images/nav_06.png" > 桩工设备<..." Line: 351 Column: 67 - 108
"...tle="起重机"><img data-src="static/images/nav_07.png" > 起重机</..." Line: 352 Column: 61 - 102
"...itle="塔机"><img data-src="static/images/nav_08.png" > 塔机</a..." Line: 353 Column: 66 - 107
"...itle="农机"><img data-src="static/images/nav_09.png" > 农机</a..." Line: 578 Column: 190 - 233
"...nofollow"><img data-src="/images/xiagongl.gif" alt=""></a> <..." Line: 580 Column: 192 - 237
"...14.shtml"><img data-src="images/shanmao11.gif" alt="山猫"></a></..." Line: 582 Column: 71 - 114
"..."_blank"> <img data-src="/images/yingxuan.gif" alt=""> </a><..." Line: 583 Column: 173 - 250
"...d.com.cn"><img data-src="/images/shzn.gif" alt="山河智能" style="width:180px; height:60px;"></a></..." Line: 585 Column: 70 - 111
"...="_blank"><img data-src="/images/xugong.gif" alt=""></a> <..." Line: 636 Column: 130 - 207
"...sun.com/"><img data-src="/images/tiebi20161221.gif" alt="铁臂商城" width="120" height="40" ></a></..." Line: 637 Column: 131 - 176
"...ong.com/"><img data-src="/images/jingong02.gif" alt="" ></a></..." Line: 749 Column: 146 - 220
"...le="信达机械"><img data-src="http://ad.21-sun.com/new/tjkhxdjx20150113_1.jpg" alt="信达机械"></a></..." Line: 755 Column: 148 - 214
"...徐州小松工程机械"><img data-src="http://www.21-sun.com/images/xs.gif" alt="徐州小松工程机械"></a></..." Line: 757 Column: 130 - 174
"...itle="厦工"><img alt="厦工" data-src="/images/xg_qjd.jpg"></a></..." Line: 758 Column: 134 - 187
"...德州宝鼎液压机械"><img data-src="/images/bd20160930.gif" alt="德州宝鼎液压机械"></a></..." Line: 764 Column: 146 - 189
"...itle="洋马"><img alt="洋马" data-src="/images/ymqjd.jpg"></a></..." Line: 765 Column: 155 - 214
"...e="雷沃装载机"><img alt="雷沃装载机" data-src="/images/20150922082059_367.jpg"></a></..." Line: 766 Column: 139 - 183
"...le="卡特彼勒"><img data-src="images/catqjd.jpg" alt="卡特彼勒"></a></..." Line: 768 Column: 154 - 267
"...le="英轩重工"><img alt="英轩重工" data-src="http://resource.21-sun.com/internet/21sun_news/image/2015/09/22/20150922082058_33.jpg"></a></..." Line: 769 Column: 157 - 259
"...le="约翰迪尔"><img data-src="http://resource.21-sun.com/internet/21sun_news/image/2015/09/22/20150922082059_905.jpg"></a></..." Line: 774 Column: 154 - 220
"...nofollow"><img data-src="http://www.21-sun.com/images/sany_2.jpg" alt="三一二手"></a></..." Line: 776 Column: 159 - 227
"...nofollow"><img data-src="http://ad.21-sun.com/new/ggtb20141120.jpg" alt="神钢二手"></a></..." Line: 777 Column: 158 - 226
"...nofollow"><img data-src="http://ad.21-sun.com/new/volvo140717_1.jpg" alt="沃尔沃"></a></..." Line: 779 Column: 68 - 135
"...nofollow"><img data-src="http://www.21-sun.com/images/doushan.jpg" alt="斗山二手"></a></..." Line: 780 Column: 180 - 240
"...nofollow"><img data-src="/images/20150922083233_539.jpg" alt="福田雷沃重工" ></a></..." Line: 788 Column: 135 - 165
"...on.com/"> <img data-src="/images/zl.jpg"> </a> ..." Line: 789 Column: 157 - 188
"...on.com/"> <img data-src="/images/zld.jpg"> </a> ..." Line: 805 Column: 148 - 289
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21-sun.com Ping

Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.

21-sun.com TRACEROUTE

Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.

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21-sun.com desktop page speed rank

21-sun.com Desktop Speed Test Quick Summary

priority - 685Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 6.5MiB (68% reduction).

priority - 80Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

priority - 2Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 1 blocking CSS resources. This causes a delay in rendering your page.

Optimize CSS Delivery of the following:

21-sun.com Desktop Resource Breakdown

21-sun.com mobile page speed rank

21-sun.com Mobile Speed Test Quick Summary

priority - 217Optimize images

Properly formatting and compressing images can save many bytes of data.

Optimize the following images to reduce their size by 2.1MiB (94% reduction).

priority - 56Eliminate render-blocking JavaScript and CSS in above-the-fold content

Your page has 5 blocking script resources and 8 blocking CSS resources. This causes a delay in rendering your page.

Remove render-blocking JavaScript:

Optimize CSS Delivery of the following:

priority - 33Leverage browser caching

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.

Leverage browser caching for the following cacheable resources:

priority - 26Avoid landing page redirects

Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.

Avoid landing page redirects for the following chain of redirected URLs.

priority - 16Enable compression

Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.

Enable compression for the following resources to reduce their transfer size by 157KiB (65% reduction).

priority - 8Prioritize visible content

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.

priority - 1Minify JavaScript

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.

Minify JavaScript for the following resources to reduce their size by 13.1KiB (44% reduction).

21-sun.com Mobile Resource Breakdown

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21-sun.com Mobile Usability Test Quick Summary

priority - 3Size content to viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.

The page content is 414 CSS pixels wide, but the viewport is only 411 CSS pixels wide. The following elements fall outside the viewport:

priority - 1Size tap targets appropriately

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.

The following tap targets are close to other nearby tap targets and may need additional spacing around them.

21-sun.com HTML validation

Warnings

The “type” attribute is unnecessary for JavaScript resources.

The “type” attribute for the “style” element is not needed and should be omitted.

Empty heading.

The “language” attribute on the “script” element is obsolete. You can safely omit it.

Consider adding a “lang” attribute to the “html” start tag to declare the language of this document.

Errors

CSS: “line-height”: “ 24px” is not a “line-height” value.

CSS: “font-size”: “ 18px” is not a “font-size” value.

An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.

Element “style” not allowed as child of element “div” in this context. (Suppressing further errors from this subtree.)

Element “img” is missing required attribute “src”.

Attribute “href” not allowed on element “div” at this point.

Bad value “_blnak” for attribute “target” on element “a”: Reserved keyword “blnak” used.

Attribute “shref” not allowed on element “a” at this point.

Element “style” not allowed as child of element “body” in this context. (Suppressing further errors from this subtree.)

CSS: “left”: Parse Error.

CSS: “top”: Parse Error.

CSS: “margin-top”: Parse Error.

Stray start tag “script”.

21-sun.com similar domains

21-sun.com Ping

21-sun.com TRACEROUTE