Aluminum alloy speed gearbox/ worm gear box/ gear reducer NMRV025-150 is made by Nayuan Transmission Machinery has many advantages compared with the speed reducer made by other company. Our company can offer two models of speed reducer, such as single step worm gear reducer and double step worm gear reducer. Nayuan Transmission adopts high quality aluminum alloy die casting box to manufacture worm gear reducer. Our worm gear speed reducer features in light weight, good appearance, compact structure and rust-proof. Nayuan can provide worm gear speed reducer with various reduction ratios for the customers to choose.