Prior to powder coating the parts pass through a three stage spray washer and phosphatizing machine. Soil is removed in the first stage with a 1-min phosphoric acid spray at 150'F, followed by an ambient temperature water rinse for 1/2 min, then a chromic acid rinse at 160'F for 1/2 min. Moisture is removed in a 4-min. pass through a dry-off oven at 350'F. Cooling time is 8 to 10 min.
地址：山东省烟台市开发区南昌大街48号
