China Ningbo Saivs Casting & Machining Manufacturer is one of specialized manufacturer and exporter of various castings including investment casting, sand casting, die-castings, quick coupling, quick coupler and machinery parts. The yearly output of various castings is above 12000tons and 1000kinds which are used in metallurgy, automobile, chemical, ship and hardware engineering industry. Our custom products, quick couplings, quick couplers, quick connect coupling, quick connect coupler, quick release coupling, quick disconnect coupling, hydraulic quick coupling, hydraulic quick coupler, air quick coupler, air quick coupling, hose quick coupler, quick coupler set have been sold well in national market and also 60 percent are exported to America, Europe United.