★ 2003→Qinghe Dema Rubber Hose Factory was established at No. 52, Jihua Road, Qinghe County. The company has a registered capital of RMB 300,000. It mainly produced automotive rubber hoses.
★ 2005→Trademark "dema" was registered approved by the State Administration of Industry and Commerce.
★ 2006→Qinghe Dema Silicone Hose Factory was registered and established, mainly produced automotive silicone hoses.
★ 2008→Appraised as a star-rated enterprise by the Qinghe County People's Government
★ 2009→Got the permit of self-import and export approved by the “Ministry of Foreign Trade and Economic Cooperation of the People's Republic of China” and its registered capital is valued at 1.2 million RMB. It passed the ISO9002:1994 international quality management system certification and its products are exported to the Middle East and Southeast Asia markets.
★ 2010→Acquired the title of "Key Enterprise of Qinghe County ".
★ 2011→Qinghe Dema Auto Parts Co., Ltd was established combined by "Qinghe Dema Rubber Hose Factory" and "Qinghe Dema Silicone Hose Factory" and the registered capital increased to 5.05 million RMB. The type of company was changed by the joint-stock cooperative enterprise to limited liability company.
★ 2013→Annually capacity increased to 1 million sets of auto rubber water hoses, and the expansion project of silicone tube products was approved by the Municipal Economic and Trade Commission, and 40 acres of new land was acquired. It passed the ISO9001: 2000 international quality system certification in the same year.
★ 2014→The new plant was fully operational.
★ 2015→Registered capital increased to 12 million RMB. TS16949 quality management system was fully introduced and products were exported to European and American markets.
Established a long-term strategic supplier for a well-known German company.