... to 25.4mm, edgewise double layer circular,acid-base resistance, water resistance,anti-static,easy to wash.2. Cabinet body: ... be broken.9. Test Flume: adopting 6mm thickness integrative water flume made of PP material, resistant to acid-base.10 ... formation thread inside, which is convenient to special water pipe.11. Dropping water device: adopting PP water container, has function of blocking stink and ...