... RequirementQingdao Xin Yang Machinery Co., Ltd specializes in pump, pump parts and other machinery parts manufacturing since 2004, with ... etc. Standard: AISI, ASTM, DIN, JIS, BS (As per customer need)Machining and Processing: Heat treatment, Polishing, Sand blasting ... Bronze, etc.StandardAISI, ASTM, DIN, JIS, BS (As per customer need)Machining and ProcessingHeat treatment, Polishing, Sand blasting, ...