Shanghai Gangfeng Machinery Tools Factory, founded in 1958, mainly produces double-speed horizontal hydraulic jacks, pullers, wire-breaking pincers, pipe-bending machines, etc. Currently, "Huanli" double-speed horizontal hydraulic jack, the knock-out product of the company, is characterized by excellent performance, and stable and reliable quality. For the double-speed horizontal hydraulic jack, the double speeds are automatically adjusted, the jacking-up operation is quickly realized in an unloaded state, and the jack is self-adjusted after being loaded, so that the working efficiency is greatly improved; and simultaneously, the jack has an overload protection function, a safety valve will be automatically opened under an overload condition, and the safe operation is ensured. At present, the double-speed horizontal hydraulic jacks, with four models of 5T, 10T, 15T and 20T, and large market share in the vehicle maintenance industry, are warmly welcomed by customers, wherein the... [Details]