This product has been the state utility model patents (patent number : 03225983.2).
This product has been the state utility model patents (patent number : 03225983.2).
此项产品已获国家实用新型专利（专利号：03225983.2）。
This product has been the state utility model patents (patent number : 03225983.2).
此项产品已获国家实用新型专利（专利号：03225983.2）。