... China. We specialized in various kinds of Gray Cast Iron, Ductile Cast Iron, Railway Fastening System, etc., which have ... in a standard process cycle and a quality feedback loop so short that quality problems are solved before they ... 2005Business Type: ManufacturerMain Products: Railway Fastening System, Gray Cast Iron, Ductile Cast IronOperational Address: Green Technical Zone, Tao-cheng District, ...