... , drilling, planning, grinding machines and testing facilities Sainless Steel Investment Casting Parts Verified Information This information is Verified by TÜV ... Pieces / Month, Gear & Worm Gear 4,000 Pieces / Month, Valve 800 Pieces / Month, Welding Structural 50,000 Pieces / Month, ... 5,000 Pieces, Gear & Worm Gear 40,000 Pieces, Valve 5,000 Pieces, Welding Structural 200,000 Pieces, Automobile ...