Device for payment intention confirmation, terminal device for payment intention confirmation, payment intention confirmation system, payment intention confirmation method, intention confirmation and payment system, and program for payment intention confirmation
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Method and apparatus for water treatment
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Mobile water treatment device
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Water treatment device
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Water treating apparatus
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Ozone feeding apparatus
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Ultraviolet sterilizing apparatus for water passing pipe
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Method for sterilizing water supply and distribution pipe of building and suppressing generation of rust
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Recirculation type sterilization and purification of liquid tank
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Deodorizing method utilizing ozone gas
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Sterilizing method and apparatus utilizing ozone gas
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Method for washing water supply and distributing pipe