Why Are 96M Black Balls on This Reservoir? [video]

2 点作者 japaget大约 6 年前

1 comment

ljsocal大约 6 年前

Will the balls abrade from rubbing together constantly? If so, do the plastic granules enter the water stream or are they filtered out? Was the 96mm quantity predicated on 100% surface coverage of the average level of the reservoir?