About us introduced shanghai automotive industry marketing ltd. (saisc) shanghai automotive industry marketing ltd., a professional corporation specialized in car sales and related services under the umbrella of shanghai automobile group inc., the world's 500 largest firm. The company has introduced advanced technologies and services from internationally known avis, yellowhat, onstar and other enterprises around the demand for cars by ordinary consumers. Based on dozens of large and medium-sized cities in shanghai and across the country, it provides specialized, standardized, differentiated, valued and trusted car service across the entire cycle of car consumption around new car sales, old car sales and car service, helping consumers shape a perfect car life. The yellow hat (known as jyh) was born in 1962 as a trademark of car shop. For more than 40 years, the yellow hat group has been one of the larger one-stop chains of post-car services in japan, and the yellow hat brand is well ...