Ningbo Siming Auto Parts Co., Ltd. was founded in 1993, factory covers about 18000 square meters, and the construction area has 7000 square meters. Siming is specialized in manufacturing muffler, exhaust tip, tire valve, billet adapter and related auto parts. Siming is a name of quality products. In order to meet your quality demands and satisfy your customers, our production is based on the quality management system according to the requirement of ISO9001 and QS9000. Please contact us if you require special types of products not recommended in our web site, we can manufacture according to your specific requirements.