The utility model has the advantages of high speed of filtering, small loss of water head, and generous content of dirt.

无密实核心。具有滤速高、水头损失小、含污量大的优点。

youdao

The utility model has the advantages of high speed of filtering, small loss of water head, and generous content of dirt.

无密实核心。具有滤速高、水头损失小、含污量大的优点。

youdao