On May 25, 2018, the signing ceremony of the sponsors of the Shanghai cooperation organization (sco) Qingdao summit was held at Qingdao municipal organ Conference Center. 
  Doublestar was identified as the only tire sponsorship company at the Shanghai Cooperation Organization (sco) Qingdao, which will provide the high-end brand----“CROSSLEADER” safety tire products to meet the needs of the summit service vehicles to replace the tires and protect the traffic safety.
  At present, Doublestar is the only state-owned listed company in Shandong tire industry, and it has the first full process of the global tire industry----"industrial 4.0" intelligent chemical plant.