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Certificate of honor
Qualification certificate
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Muffler
Socket
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Certificate of honor
Qualification certificate
Patent certificate
Patent Certificate for Manufacturing Method of Automobile Air Conditioner Silencer
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A silencer air-tight detection device
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Patent certificate of a muffler pneumatic fixture
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Patent certificate of a muffler chamfering machine
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Patent certificate of a multi-station necking machine
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Patent certificate of metal tube wall convex hole drawing device
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Patent certificate of a stirring device for adding sliding powder before cold extrusion of metal workpiece
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A patent certificate for pressure silencer of air conditioning pipeline for vehicles
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