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A kind of vertical non-return valve
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A kind of horizontal check valve
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A kind of plastics spraying machine dust suction recyclable device
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A kind of solenoid valve film pad
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A kind of film cushion solenoid valve
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A kind of mining protection control mechanism
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A kind of environmentally friendly plastic-blasting device
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A kind of plastic-blasting method of safety and environmental protection
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A kind of mine underground dust-extraction unit
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A kind of material safety detection mechanism
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One is mining patrols and examines wired controlling organization
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Spray-coating system for irregular workpieces
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Downhole safety power supply device
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Digital display oil pressure sensor
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Mining explosion-proof type straight-through solenoid valve
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