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Factory direct supply ammonia nitrogen compound carbon source sewage treatment bacteria cultivation bacteria supplement organic carbon source aquaculture COD

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100000 COD (dark red) 25kg

200000 COD (dark red) 25kg

300000 COD (dark red) 25kg

400000 COD (dark red) 25kg

500000 COD (dark red) 25kg

600000 COD (dark red) 25kg

700000 COD (dark red) 25kg

100000 COD (dark red) ton price

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