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CN105387756A
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Improved heat exchange enhanced air conditioner
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CN105465867A
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Heat exchange enhancement floor heating system
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CN105387760A
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Heat exchange reinforcement air conditioner
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CN105387753A
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Improved heat exchange enhanced radiator
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CN105387745A
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Improved heat exchange enhanced water heater
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CN105387747A
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Cross oval section and round face heat exchange enhanced pipe
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CN105387508A
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Improved heat exchange enhanced floor heating system
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CN105387757A
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Improved heat exchange enhanced pipe
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CN105387750A
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Heat exchange enhanced pipe
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CN105363745A
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Bendable square tube
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CN105370989A
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Bendable round pipe
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CN105363744A
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Free bendable square tube
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CN105371097A
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Bendable rectangular pipe
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CN105370988A
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Rectangular tube capable of being bent freely
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CN105370990A
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Round pipe capable of being bent freely
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