... 1.Stainless Steel Blind Base,Marine Hardware 2.Tuopu metal manufacturing-china investment casting 3.According to ISO 9001 1. Casting ... . Computerised numerical. Control measuring ,machining ,pressure inspection up to 200bars ,mechanical values for tensile strength. ,yield stress ,notched ... , x-ray,metallograph.7. Quality control: According to ISO 9001 2001 Stainless Steel Blind Base,Marine Hardware