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

1.1、所有新车须底盘及车厢干净，旧车有锈的须铲除。

2.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.

2.星化学术是利用星系列剂通过脱脂、酸除锈、钝化等工艺去除被物体表面的污物或覆盖层。