Products: WFC dip compensator quality welding anchor chain, the liquid evenly coated with PVC Coated after heat curing, forming chain-like balance chains. Chain ring clearance is eliminated, no noise, to overcome a set of easy to tear plastic compensating chain shortcomings, for my company's patented products are widely used in domestic and medium-sized elevator factory. It applies elevator speed less than or equal 1.75 m / s in speed ladder.