The dual against hydrosphere oak rubber or plastic rings, may cause it better rainproof and 1 meter above complete waterproofing.
双重防水圈橡胶圈，可以使其更好的防雨与1米以上的完全防水。
The dual against hydrosphere oak rubber or plastic rings, may cause it better rainproof and 1 meter above complete waterproofing.
双重防水圈橡胶圈，可以使其更好的防雨与1米以上的完全防水。
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