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Piston type electric control valve
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A kind of special cementing slips
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A kind of high temperature air steam engine
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A kind of high sensitivity tactile senser
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Low-temperature ground radiating warming panels
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A kind of small-scale ultraviolet ray is without grease fume purifier of fume
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A kind of automobile fog remover
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High pressure methane liquid discharging device
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Energy-saving balancing device for beam-pumping unit
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Electronic and ionic formula engine fuel saving control device
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