SORL Auto Parts, Inc. is engaged primarily in the manufacture and distribution of automotive air brake valves and hydraulic brake valves mainly for the commercial vehicles market, such as trucks, vans and buses, in the People's Republic of China (PRC). The Company distributes products both in China and internationally under SORL trademarks. The Company's product range includes 36 types of brake valves with over 800 different specifications.

In 2004, SORL derived 47% of its revenue from sales of Original Equipment Manufacturers (OEM's) products to almost all of China's truck manufacturers. Our three largest customers, First Auto Group Purchase Dept , FAW Qingdao Automobile Works, Liuzhou Special Auto Manufacturing Co. Ltd represented 31% of our total sales, among them First Auto Group (FAW) is among the top five largest automobile manufacturers in China. Aftermarket sales are channeled through 30 independent sales centers that sell exclusively SORL and SORL Auto Parts, Inc. products to over 800 distributors. For the international market, the company partners with the Ruili Group through its international sales centers located in Australia and Dubai.