Hubei Sanjiang Space Double Rhombus Castors Ltd. Is a large-scale special castors making enterprise integrating researching, developing and manufacturing. Being based on the powerful space technology, we have bent ourself to developing nwe civilian products constantly. We developed Double Rhombus series of castors in 1978. We have been adopted Eruopean Standard in designing and manufacturing castors with beautiful look, agile swivel and durable use. We have modern manufacturing processes and equipments in mould making, pressing, welding, surface-plating, machining, assembly and performance test last 20 year's research and development. Therefore the castors haved been keeping the title of top-quality in China, and awarded the Golden madals at Chinese Light industry Trade Fair but also Excellent Chinese Products Trade Fair. The high-quality handcart series for aidrome, which are made of stainless steel or aluminum alloy handcarts and trolleys newly developed by our corporation, customers