
Goldcard, No. 1 smart gas meter manufacturer in China. Founded in 1997, Goldcard is the biggest manufacturer in China with registered capital of 30 million US dollars. Goldcard is also the first listed company in smart gas flow meter industry. Stock name: Goldcard; Stock code: 300349 Successful story of gas meter After 18 years efforts, Goldcard has successfully developed products like smart diaphragm gas meter, IC card prepayment diaphragm gas meter, IoT (Internet of things) gas meter, wireless ...