... due to your design or requirement. Shenyang Bolong Auto Parts Manufacturing Co. Ltd. specializes in the design and manufacture of cylinder heads ... OEM for Beijing Foton Environmental Engine Co., Ltd., Tianjin Lovol Engines Co., Ltd., Zhejiang Gonow Auto Co., Ltd. and Liuzhou Machine Plant ... of Liuzhou Wulug Motor Co., Ltd., but also provide products for after-sale market. ...