... -Casting 1) Ductile iron and gray iron sand casting Features:Gearbox, Gear case, Gear, Worm, Worm Shaft, Casting, Sand-Casting1) Ductile ... Units Produced(Previous Year) Stamping Parts & Machining Parts Product Line Gearbox 1,000 Pieces / Month, Gear & Worm Gear 4,000 Pieces ... 000 Pieces / Month, Automobile Stamping Parts 800,000 Pieces / Month Gearbox 5,000 Pieces, Gear & Worm Gear 40,000 Pieces, Valve ...