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1. According to the materials of stainless steel and oxide severity, can be diluted with liquid or by the 1:1~4 with water after use;

2. iron ferrite and Martensitic and austenitic stainless steels with low nickel content (for example, 420, 430, 200, 201, 202, 300, 301, etc) use diluted, higher nickel content of austenitic stainless steel (304, 321, 316, 316L etc) with liquid soaking;