2014 / 03 / 06
"Many tie rod Bearing" has gotten the Certificate of Utility Model Patent
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2014 / 02 / 17
"One type of gas distributor for mechanical agitating tank" has gotten the Certificate of Utility Model Patent
 
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2014 / 02 / 17
"High pressure seal magnetic transmission device" has gotten the Certificate of Utility Model Patent
 
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