Shanghai Dihua Technology Co., Ltd. was established (Dinasheng); And launch the company's first ultrasonic flowmeter

Develop ultrasonic water meters and enter the market

The multi-channel ultrasonic flowmeter has been successfully developed; Successful development of battery powered low-power ultrasonic flowmeter

Stock code listed on the Shanghai Stock Exchange: 100029; The company has been renamed as Shanghai Dina Sound Technology Co., Ltd

Launching the first R500 range ultrasonic water meter in China

Ultrasonic water meter awarded the title of China's good instrument

Awarded the title of "Small Giant Cultivation Enterprise in Qingpu District, Shanghai"; Received five-star certification for after-sales service system

Awarded the title of "Specialized, Unique and New" enterprise by the Shanghai Municipal Commission of Economy and Information Technology