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