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Shanghai Songming Transmission Machinery Co., Ltd. is an enterprise specializing in the research, design, and sales of transmission products. Its main products include: ML plum elastic couplings, GR star elastic couplings, elastic diaphragm couplings (DJM, SJM, JMII, JMIIJ), elastic pin sleeve couplings, cross-axis universal couplings, universal joints, drum gear couplings, bellows couplings, UL tire couplings, SL cross slider couplings, KC chain couplings, JS serpentine spring couplings, flange couplings, and others. It also offers Z-type expansion connecting sleeves and taper belt pulleys (SPA, SPB, SPC, SPZ), and undertakes the processing and customization of non-standard transmission components.