variflight technology co. ltd. (simplified chinese: 飞友科技有限公司, pinyin: fēiyǒu kèjì yǒuxiàn gōngsī) branded as variflight internationally, and as 飞常准 (pinyin: fēichángzhǔn) in mainland china is an information technology company specializing in the civil aviation data services. the company is based in hefei, anhui province, people’s republic of china. variflight’s products and services include flight status information, a-cdm, mobile applications, travel information, flight delay insurance, airport taxi, etc.[1][2][3] in 2018, variflight has launched its online air traffic tracking service. [4]