国产在线观看免费人成视频,色欲久久综合亚洲精品蜜桃,粉嫩大学生无套内射无码卡视频,囯产精品久久久久久久久久妞妞

Design and Construct Hot Dip Galvanizing Plants both Domestically and Internationally

PRODUCTS RANGE

Add: Jinshan Bridge Zone, Xuzhou, Jiangsu, China
Mobile: 86-13805211808
Tel: 86-516-83168088
Email: xy-rjd@163.com

Current Position: Home> Products

Details

phosphating?solution
Name:
phosphating?solution
  • Model:
  • Uses:
  •  
Details

Phosphating solution process:
Oil remuving----rust removing(acid pickling)---rinsing---- parkerising---rinsing----closed----naturally airing
Notice:24 hours shall not touch!
Technical index:

Appearance

Specific gravity

Operating fluid 

Total acidity

Free acid

Clarification transparent liquid

1.2~1.3

1:10 in proportion dilution

40 point~60 point

10~17

返回頂部 電話