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Precisition Products
- Auto parts
- 优发国际:Compressor Casting
- 优发国际:Electric power fitting
- 优发国际:Railway Part
- Pump Valve Pipe Casting

Railway Part
Ductile iron: QT400, QT500, QT550, QT600, QT700Gray iron: HT200, HT250, HT300, HT350Alloy: NiCrMo alloy