四虎永久在线日韩精品观看-四虎永久在线视频-四虎院5151hhcom-四虎院影永久在线观看-欧美日韩午夜精品不卡综合-欧美日韩精品一区二区三区视频

Features:
1) Small flow resistance
2) Swift opening and closing at 90-degree angle
3) Compact structure
4) Excellent sealing performance
5) Easy maintenance
6) Widely used in water works, power generating factories, chemicals, food, paper
making and pharmaceutical industries

Inner packing:
Carton

Outer packing:
Wooden cases