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“A non-linear reciprocating rod air sealing device” technology independently developed by our company has been author
Time：2018-01-04Source ：Zhongyi Heavy Industrial EquipmentHIT：
Recently, “A non-linear reciprocation rod air sealing device” technology independently developed by our company has been authorized by the State Intellectual Property Office as a utility model patent.
Patent No. ZL 201720600208.6 .
