Desk organizer set Good office plastics often require high quality surface treatment dies to produce. In addition to the appearance, how to reduce the cost of the mold is also a major problem. Many plastic products used in the office are made of PP plastic. With the choice of die steel and the characteristics of PP plastics, we can provide you with more than 30 years of experience in mold design, you don\'t have to worry about office products going down on ribs or flash etc.