1: 12 years of die casting experience 2: ISO 9001 Certification 3: OEM /ODM Service 4: ... , machine, valve, pneumatic , etc. 4) Whole process including: Tooling, Die casting, Sand casting, Gravity casting, CNC machining, CNC milling, Stamping, Plastic injection ,Painting and ... time if there is any question on our production. Aluminum die casting handwheel of TK model knife gate/valve fittings/parts