... water, drainage, seepage, the good effect of moisture, width, thickness of the full range of specifications and low cost, simple construction. 2 ... diversion canal, reservoir, pond used, the water storage pond, seepage of irrigation systems) .9) aquaculture (intensive, factory-farming ponds, ... content±3 Explanation: GL-1 is for: normal low density linearity PE membraneGL-2 is for: flexible EVA, PE ...