Hangzhou solid machinery manufacturing co., LTD. Is upgrading from hangzhou wulin machinery co., LTD.,which is specialized in manufacturing machinery of chain, located in yuhang district ,Hangzhou city .in the early 1980s become to study and manufacture equipments of chain,coordinating and organizing by minister of industry .during these 35 years , awarded and wen ministerial, provincial scientific and technological progress awards, r&d, manufacturing, sales as one, to be the earliest ...