1.Stainless Steel Blind Base,Marine Hardware 2.Tuopu metal manufacturing-china investment casting 3. ... , ASTM, BS,JCSI.3. Piece numbers: small, medium and large series.4. Process: cast, machining, turning, milling, drilling, thread cutting.5 ... . Quality control: According to ISO 9001 2001 Stainless Steel Blind Base,Marine Hardware