Metal Products--Pulley Series 1, A professional manufacturer and exporter; 2, Design bases on customers' need; 3, Nylon Steel The detailed descriptions of the Metal Products--Pulley Series are as follows:HOLY METAL PRODUCTS YUYAO CO.,LTD1, A professional manufacturer and exporter;2, Design bases on customers' need;3, Nylon Steel Stainless. Metal Products--Pulley Series