91精品国产亚一区二区三区老牛_91精品国产亚洲_91精品国产一二三_91精品国产一区_欧美两根一起进3p做受视频_欧美另类激情

Features:
1) DN6-100
2) Advanced structural design
3) Complies with national standards
4) Economizes energy
5) Suitable for petroleum, chemicals, food, medicine, textile, paper making, water
supply and drainage, metallurgy and energy systems as unilateral valves

Inner packing:
Bubble plastic bag

Outer packing:
Plywood cases