The utility model has the advantages of simple structure, safety, high pull resistance and water-proof.

本实用新型具有结构简单、安全，抗拉性好，防水的优点。

youdao

The utility model has the advantages of simple structure, safety, high pull resistance and water-proof.

本实用新型具有结构简单、安全，抗拉性好，防水的优点。

youdao