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About Us

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What We Do

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).

Chongqing Zhengda Steel Structure Co., Ltd.

One-Stop Guardrail Solutions

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Production Line

Wave guardrail production line
Wave guardrail production line
Wave guardrail production line

Spray painting assembly line
Spray painting assembly line
Spray painting assembly line

Laser cutting machine
Laser cutting machine
Laser cutting machine

Robot
Robot
Robot

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