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

1、所有新车必底盘及车厢清洗干净，旧车有锈的地方必。

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.

清洗技术是利用系列清洗剂通过脱脂、酸洗锈、钝等工艺去被清洗物体表面的污物或覆盖层。