Yanshangtong.com Site Title

北京言尚通科技有限公司

Yanshangtong.com Meta Description

北京言尚通科技有限公司成立于2014年03月24日，注册地位于北京市房山区阎村镇阎富路环岛南侧310米，法定代表人为赵燕妮。经营范围包括一般项目：技术服务、技术开发、技术咨询、技术交流、技术转让、技术推广；信息系统集成服务；软件开发；数据处理服务；数据处理和存储支持服务；广告设计、代理；广告制作；平面设计；广告发布；法律咨询（不含依法须律师事务所执业许可的业务）；日用杂品销售；日用品批发；日用品销售；日用百货销售；服装服饰批发；服装服饰零售；企业管理；企业管理咨询；劳务服务（不含劳务派遣）；人力资源服务（不含职业中介活动、劳务派遣服务）；商务代理代办服务；科技中介服务；信息技术咨询服务；信息咨询服务（不含许可类信息咨询服务）；安全咨询服务；教育咨询服务（不含涉许可审批的教育培训活动）；社会经济咨询服务；专业设计服务；咨询策划服务；计算机系统服务；会议及展览服务；企业总部管理；承接档案服务外包；生产线管理服务；市场营销策划；家政服务；软件外包服务；基于云平台的业务外包服务；认证咨询；人工智能应用软件开发；人工智能行业应用系统集成服务；人工智能基础软件开发；互联网销售（除销售需要许可的商品）；薪酬管理服务；网络与信息安全软件开发；信息系统运行维护服务；人工智能基础资源与技术平台；市场调查（不含涉外调查）。（除依法须经批准的项目外，凭营业执照依法自主开展经营活动）许可项目：职业中介活动；互联网信息服务；海员外派业务。（依法须经批准的项目，经相关部门批准后方可开展经营活动，具体经营项目以相关部门批准文件或许可证件为准）（不得从事国家和本市产业政策禁止和限制类项目的经营活动。）北京言尚通科技有限公司对外投资4家公司，具有3处分支机构。

Yanshangtong.com Test Results

Yanshangtong.com Mobile Performance: 90/100
Quick overview:
First Meaningful Paint
2.3 s
First Meaningful Paint measures when the primary content of a page is visible. Learn more about the First Meaningful Paint metric.
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Largest Contentful Paint element
3,020 ms
This is the largest contentful element painted within the viewport. Learn more about the Largest Contentful Paint element
Eliminate render-blocking resources
Potential savings of 1,070 ms
Resources are blocking the first paint of your page. Consider delivering critical JS/CSS inline and deferring all non-critical JS/styles. Learn how to eliminate render-blocking resources.
Serve images in next-gen formats
Potential savings of 96 KiB
Image formats like WebP and AVIF often provide better compression than PNG or JPEG, which means faster downloads and less data consumption. Learn more about modern image formats.
Reduce unused CSS
Potential savings of 19 KiB
Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.
Image elements do not have explicit `width` and `height`
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Properly size images
Potential savings of 47 KiB
Serve images that are appropriately-sized to save cellular data and improve load time. Learn how to size images.
Serve static assets with an efficient cache policy
34 resources found
A long cache lifetime can speed up repeat visits to your page. Learn more about efficient cache policies.

Yanshangtong.com Mobile SEO: 100/100
Quick overview:

Yanshangtong.com Mobile Best Practices: 59/100
Quick overview:
General
Uses deprecated APIs
1 warning found
Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.
User Experience
Serves images with low resolution
Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.
Trust and Safety
Does not use HTTPS
34 insecure requests found
All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.
Does not redirect HTTP traffic to HTTPS
Make sure that you redirect all HTTP traffic to HTTPS in order to enable secure web features for all your users. Learn more.
Yanshangtong.com Mobile Accessibility: 74/100
Quick overview:
Best practices
These items highlight common accessibility best practices.
`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.
Navigation
These are opportunities to improve keyboard navigation in your application.
Heading elements are not in a sequentially-descending order
Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
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