HZPT is a company that specializes in providing power transmission components, including chain couplings. Chain couplings are a type of flexible coupling that is used to connect two shafts together and transmit torque from one shaft to the other. Here are some key features of the China chain coupling from HZPT on the website:
https://hzpt.com/couplings/

China Couplings, Fluid/MH/Chain/NM/Gear/Jaw Couplings Manufacturer, Supplier, Factory

China Couplings Manufacturers & Couplings Suppliers Directory - Find a Couplings Manufacturer and Supplier. Choose Quality Couplings Manufacturers, Suppliers, Exporters at HZPT.com. Couplings