
ChangZengranked first in China's production and sales for many years steel coil. ChangZeng's steel tubing series include multiple types. It is extremely chemically resistant. The surface is treated with a protective chemical coating or protective paint to prevent dusts from entering. It is tested by third parties such as SGS and BV. ChangZenghas optimized customer service constantly. It is used in transportation, construction, machinery, shipbuilding, and other fields.

Our company incorporates environmentally-friendly and sustainable practices. We adopt more energy-efficient production methods and machines for minimizing environmental impact.