... 4, Security: technical, reliable, reasonable structure, use of safety. 5, the pressure continued: Continuous high-pressure ... non-destructive. 7, with water plug: For a variety of gap leakage, wave leakage, underground water gushing. ... in the depths. 8, supporting the use of a wide range of materials: polyurethane, epoxy resin, acrylic resin, ... pump,waterproof injection pump, injecting machine