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Business risk appraisal procedure, system and medium
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application technology of multifunctional tree cover
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A kind of colored road surface automated construction equipment
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A kind of colored road surface automation receipts pressure equipment integrating
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Sand ground, which is planted trees, cheats training ridge method
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A kind of persimmon carrying movable case with defencive function
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Flat tongs fixture
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Self-closed mechanical faucet
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Novel efficient closed-type cycle central air conditioner system with energy used in stepped mode
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Ring-buckle type end coupling bar of vehicle stable bar
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Carriage frame with damping of vibrations
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