As the promotion of technology innovation constantly in recent years, by 2019 tianchen not only successfully passed the ISO quality management system certification audit, and successful with 14 utility model patent certificate, and was awarded by Shanghai science and technology committee, Shanghai bureau of finance, state administration of taxation issued by the tax bureau of Shanghai joint "high-tech enterprise" certificates.The utility model is not only the crystallization of our r & d personnel, but also the demonstration of our scientific research and innovation strength. It not only p..