
ChangZengis an expert in steel sheet production, serving many overseas clients. ChangZeng's steel tubing series include multiple types. All products from steel coil are independently designed and manufactured by Shanghai ChangZeng Co., Ltd.. It is not subject to yield-point runout and can, therefore, require low levels of maintenance. our companyprovides superior customer service, costs saving and excellent communication to agents and clients. The minimum order quantity for this product is 5 tons.

Our company will stick to the high standards of professional conduct, and to ethical and fair business dealings with our customers to achieve long-term success.