Flange structure, double sealing rubber ring, so anti-corrosion, waterproof performance.

法兰式结构，双层密封胶圈，故防腐、防水性能好。

youdao

Flange structure, double sealing rubber ring, so anti-corrosion, waterproof performance.

法兰式结构，双层密封胶圈，故防腐、防水性能好。

youdao