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Ion-exchanger
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Patent number 9,873,066
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Issue date Jan 23, 2018
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Roki Co., Ltd.
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Masaya Ogura
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Ion-exchange equipment
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Patent number 9,614,234
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Issue date Apr 4, 2017
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Roki Co., Ltd.
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Kaoru Kamo
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE