... than 300 tons per month7 Precision Investment, Lost Wax Process Steel,Stainless Steel,Cast Iron Machined Castings and CNC machining ... production process: Mould making-Shell making-Pouring-Sand (glass ball) ... 30 days10.Terms:FOB,CIF11.Precision Investment, Lost Wax Process Steel,Stainless Steel,Cast Iron Machined Castings and CNC machining ...