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nvestment ludox foundry: We produce mainly the sofisticated investment castings including stainless steel 304 and 316 materials with weight of 0.01KG-50KG per unit. All these products are mainly sold in international markets. We also provide machinery processing and polishing finished products according to clients' requirements. Carbon-steel Casting Investment sodium silicate foundry: We produce mainly the average level casting including all models of casting steel with weight of 0.5KG-50KG per unit. All these products are sold in national markets. sand casting (resin sand and normal sand): we produce small and medium size castings with weight of maximum 3 tons and minimum 100 G. We are now producing all kinds of alloy steel and all models of casting irons