Sinoto instrument (Suzhou) Co., Ltd., formerly known as Shanghai Xindong Instrument Co., Ltd., was founded in Shanghai in 2002. In 2016, it was relocated to Zhangjiagang Free Trade Zone in Jiangsu Province to establish a production and technology R & D base. It mainly produces and sells all kinds of high-quality flow, liquid level and other on-line measurement, measuring instruments and control systems. The products are widely used in urban gas, petrochemical, steel, electronics, electric power, environmental protection and other industrial fields.