WebHanyu Pinyin. Chánglóng Guójì huòyùn gōngsī. Zhejiang Loong Airlines Co. Ltd ( Chinese: 浙江长龙航空公司 ), branded as Loong Air ( 长龙航空) and previously as CDI Cargo ( 长龙国际货运航空公司 ), is a Chinese airline based in Hangzhou Xiaoshan International Airport in Hangzhou, Zhejiang. [3]