New car should be clean, and the old car should be derust before working.

1、所有新车必须底盘及车厢清洗干净，旧车有地方必须铲除。

BlueStar cleaning technology uses BlueStar series of cleaning agent eliminate the dirt and cover on the object surface by the technique of degrease, derust and passivation.

星化学清洗技用星系列清洗剂通过脱脂、酸洗除、钝化等工艺去除被清洗物体表面污物或覆盖层。