SHANGHAI GOLDGUN M&E HI-TECH CO., LTD., located in Shanghai comprehensive industrial development zone of Fengxian district in Shanghai, is a professional company Collection of scientific research, production, sales in the integration. Our mainly products: NMRV series aluminum-alloy worm speed reducer, WP Series cast-iron worm speed reducer, R,S,K,F series helical gearboxes, T Series spiral bevel gearbox, X and B Series Cycloid reducer, UD（TXF）、JWB Series Planetary friction type stepless Variator, ZDY, ZLY, ZSY; DBY/DCY, H/B series industry gearboxes and so on. Above products widely used in field of petroleum, chemicals, light-textiles, weaving, foodstuffs, plastics, medicine making, paper making, printing, woodworkers, and some environmental protection. Mechanical equipment. We have already exported these products to Europe, America, Southeast Asia and other countries and regions.