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mud ball for sealing well and clay ball for sealing hole of geological drilling-九游会登录网址
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2017-5-15 views: 328
one use of products; drinking water wells plugging dirt excessive water to protect water quality!
use two; old well backfill to ensure water safety!
use three, drilling, piling, drilling, mud wall, to prevent landslides, plugging!
use four; reservoir gate sealing!
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