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Certificate of honor
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Muffler
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Certificate of honor
Qualification certificate
Patent certificate
Patent certificate of a continuous processing device for the necked and flared connection of automobile air conditioning metal parts
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Patent certificate of a necking processing device for the shell of automobile air conditioner tubular muffler
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Patent certificate of a tubular muffler for automobile air conditioner
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Patent certificate of a staggered diffuse reflection multi-stage muffler for automobile air conditioner
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Patent certificate of an impedance composite automobile muffler
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Patent certificate of a multi-stage buffer muffler
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Patent certificate of a self-feeding milling machine tool for processing metal parts of air conditioners
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Patent certificate of automatic machining machine for processing metal parts of air conditioner
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Patent Certificate for Manufacturing Method of Single-Cavity Resonant Car Air Conditioner Silencer
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