Shanghai Songming Transmission Machinery Co., Ltd. is an enterprise that researches, designs and sells transmission products. Its main products include: ML plum blossom elastic coupling, GR star type elastic coupling, elastic diaphragm coupling (DJM, SJM, JMII, JMIIJ), elastic pin sleeve coupling, cross shaft universal coupling, universal joint, drum gear coupling, bellows coupling, UL tire coupling, SL Coupling#Oldham, KC chain coupling JS serpentine spring couplings, flange couplings, etc., Z-type expansion coupling sleeves and cone sleeve pulleys (SPA, SPB, SPC, SPZ), and undertake the processing and customization of non-standard transmission components.