The 5mm lifting chain is made of manganese steel and has undergone heat treatment technology to ensure the product's impact resistance, load-bearing capacity, toughness and elongation, with a quality level of 80.We can also perform galvanizing, blackening, dipping paint, plastic hanging, electroplating and other treatments on the surface of 5mm lifting chains according to customer requirements. You can send us samples and drawings, and we will serve you wholeheartedly to achieve your satisfaction.