Shandong Zhongji Metal Products Co., Ltd. supplies 304, 316 and other series of stainless steel. The chromium content is ≥10.5% to form a nano-scale Cr₂O₃ passivation film on the surface, which can automatically regenerate and block the corrosion of oxygen, chloride ions and humid and hot environments for a long time. Combined with the factory's own pickling and passivation line and 72-hour salt spray test, it ensures that each batch of materials is accompanied by an MTC report and meets ISO/ASTM standards, providing stable and traceable corrosion-resistant solutions for international customers in food equipment, marine engineering, architectural decoration, etc.