DEVICES FOR INJECTING ANTISEPTIC SOLUTION INTO WATER PIPE AND SMALL WATER SUPPLY SYSTEM
To provide a ball vibration type chemical injection device by which chemicals are injected without power, and which automatically controls injection quantity and injection time of the chemicals, enables the chemicals to be injected in the state that the chemicals are divided into a micro-size and fi...
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Format: | Patent |
Sprache: | eng |
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