Kubva kuma1950, mainjiniya akabudirira kugadzira nema geomembranes.Kushandiswa kwegeomembranes, inonziwo flexible membrane liners (FMLs), kwawedzera nekuda kwekunetseka kuri kukura pamusoro pekusvibiswa kwemvura yakakosha.Traditional porous liners, senge kongiri, admi ...
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