Founded in 1998 and based in Tongliang District, Chongqing, Zhengda specializes in manufacturing a diverse range of products—including building railings, highway guardrails, isolation barriers, lamp posts, signage, and steel structures—using carbon steel, zinc steel, stainless steel, and aluminum alloy.
With nearly 100 patents for "prefabricated drive guardrails" and as an industry standard contributor, we operate advanced automated production lines equipped with laser cutting and CNC machining. Our products serve over 30 provinces across China and are exported to markets in Asia (Japan, Vietnam) and Africa (Liberia, South Sudan).
Million of registered capital
Warranty commitment
Factory floor area
Fully automatic production line
Professional and High-quality

For 27 years, we have been deeply engaged in the guardrail manufacturing industry. Our 15,000㎡ production facility is equipped with 3 fully automated production lines, boasting remarkable annual production capacities: 1000km of anti-collision guardrails, 2000km of highway guardrails, and 1,000,000m of housing construction guardrails. As a partner of a Fortune Global 500 company, we hold ISO certifications, which reflect our unwavering focus on quality. Our patented zinc-steel guardrail technology ensures outstanding 20-year rust resistance, satisfying the strict requirements of traffic engineering.

We provide end-to-end services from design, production, and installation, coupled with robust OEM/ODM customization capabilities to cater to unique project needs. For standard guardrail products (anti-collision, highway, and isolation), we maintain ready stock for swift 7-day delivery. Recognized as a China High-Tech Enterprise and a Chongqing "Specialized, Precise, and Innovative" enterprise, we offer a 2-year warranty, lifetime access to spare parts, and expert installation guidance, ensuring every project runs smoothly from start to finish.
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