Ningbo Siming Automotive Co., Ltd is one of largest and branded tire safty accessories expert in the world. Established in 1995, Siming now has become a powerful and innovative producer for tire valves, lead-free weights and wheel spacers,covering an area of more than 10000 square meters, nearly 200 employees and total assets of more than 150 million Yuan. we have got certification of ISO9001 since 2009 and passed TS16949 certificatio in 2014. With innovation and enterprising spirit , Siming started to develop and produce TPMS sensors in 2016 for local OEM market. now We expand production portfolio by OE replacement sensors and universal programmable sensors for cars and trucks.