Since the foundation of the company in 1976, the over 30 years history of Triangle Group witnessed the its rapid and stable development accompanied with its name changing from the original Weihai Tire Factory to Shandong Tire Factory, and to Triangle Group Co Ltd.   Triangle Group takes the production and market of tires(including tires, tubes and flaps) as its main business while also engages in the industries of fine chemicals, mechanical and electrical equipments repairing , engineering erection and truck transportation and so on . The group takes a lead in economic efficiency in national tire industry and ranks 12nd among the top 50 tire manufacturers in the world. With more than 30 years history of tire production, Triangle Group has formed the complete product series. At present, Triangle Group mainly produces over 110 sizes of radial tires with over 500 varieties and over 100 sizes of bias ply tires with over 400 varieties in 6 sorts such as passenger tires, truck tires, OTR tires, agricultural tires, industrial tires and desert tires, which can meet the demand of main domestic and international vehicle types and specialization. With a production capacity of 11 million units of tires(including 800units of radial tires), Triangle Group has occupied the first position in domestic tire industry. Adhering to the aim of supplying quality products and service to the markets and keep enhancing the customers satisfaction, the groups basic management caters to the international practice in full aspects. The "TRIANGLE" tires have aquired some safey certificates such as Chinese CCC, USA DOT and European ECE etc, and its major performance indexes are on international level.  The core enterprise of the group took the lead in establishing the ISO9001 quality system, ISO14001 environmental management system, QS-9000 quality system, TS16949 and ISO10012 measurement confirmation system in the domestic tire sector, and they have successfully passed the certification of authorized organizations. Triangle Group keeps proceeding with the technical renovation and product renovation, strengthening its core competitive advantage. It has established a national level Technical R&D Center, a post-doctoral researching station. It also has undertaken an in-depth cooperation with some high learning institutes and scientific research institutions such as Shandong University, Harbin Industrial University , University of Arizona, Tsinghua University ,the Chinese Academy of Sciences and  Beijing Rubber Industrial Research and Design Institute.Through use of advanced international production and inspection technology and equipments for research and development, the group has successfully produced some superior quality and environmental friendly new tires to meet and guide the market demand. The Triangle brand tires find favor in customers eyes and the group has built a good long term cooperative partnership with over 40 vehicles and machineries manufacturers such as the FAW, Dongfeng Motor Corp, China Duty Heavy Truck Corp, Tianjin Automobile Corp, Shanghai Automobile Corp etc and supplies the original element tires year and year out for them. The market networks for replacement tires can be found across China and over 150 countries and regions. In order to embrace the new situation of the market competition, the Triangle Group has established its object of "building into advanced world enterprise and creating world famous brand". Through perfecting the markets network system and scientific and technological creation system, the group is implementing a strategy to diversify its capital investment, internationalize its business and modernize its management to realize a new breakthrough in the enterprise development during the 10th Five Year Plan period.