All awl tube thread pre-coated PTEF leakproof gum, with excellent sealing property.

所有锥管螺纹预涂聚四氟乙烯防漏胶，密封性能好。

youdao

All awl tube thread pre-coated PTEF leakproof gum, with excellent sealing property.

所有锥管螺纹预涂聚四氟乙烯防漏胶，密封性能好。

youdao