On taiwan, sum's "sum union automobile service" is based on the practical experience and resource-rich enterprise built up by taiwan's hsbc motors group for more than 30 years. As a result of continuous development and innovation, taiwan has become a bigger car service chain, with three main channels under the umbrella of the sum alliance for high-quality second-hand cars, the sum union for car repairs and the sum federation of masters of american cars. As of october 2010, there were 527 taiwan union stores, 12 of which owned the xinjiang blow-out centre and 5 of which were speedbox regeneration centres. Sum in the continent: sum, in conjunction with professional research and development teams on both sides of the straits, has been engaged in more than five years of market testing and specialized research to break down one by one the difficulties faced by the car repair industry and to provide an integrated business programme of technology, management and marketing for operators of ...