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Novel thermal insulation frame
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Ribbed slab device for producing wall plates
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Thermal insulation wallboard with new structure
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Novel vehicle heat-storage device
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Novel vehicle heating system
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Air conditioner with hot water supply function
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High-strength light heat-preserving compound sandwich plate
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Heat-reclaiming device of large central air conditioner
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Use of Three tube-type air conditioner hot water converter in hot water supply of air conditioner
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Three tube-type air conditioner hot water converter
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Three tube-type air conditioner hot water converter with heat exchanger
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Two tube-type air conditioner hot water converter
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Combined structure of air-conditioner and heat insulation water tank
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Normally open type magnetic valve
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