ZHANGQIU GUDAO STEEL BALL CO., LTD
Quality control
Our company's product raw materials are all sourced from domestic large and medium-sized steel, with stable and reliable materials, ensuring product quality from the source. During the steel ball processing process, strict process control is implemented to ensure that the products meet customer requirements; The company has established a physical and chemical laboratory, which conducts strict inspections on each batch of products. Unqualified products are not allowed to enter the warehouse, ensuring that the pass rate of the products before leaving the factory reaches 100%