Be used for as cast adjustable suction to inhale sand device
The utility model discloses a be used for as cast adjustable suction to inhale sand device, the sand filter is connected to sprue one end, the gas flow regulating valve is connected to the sprue other end, gas flow regulating valve connecting pipe, big straw is connected at the sprue middle part, bi...
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| Format: | Patent |
| Sprache: | chi ; eng |
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