ENSIGN was established on April 26, 2001, and is a large enterprise specializing in the production of citric acid and alcohol products.
The company is located in Changle, the capital of sapphires in China. With convenient transportation, abundant resources, superior geographical location, and obvious location advantages, it has extremely convenient waterways, aviation, railways, and highways. The nearby seaports include Qingdao Port, Yantai Port, Rizhao Port, Weifang Port, and Longkou Port. The company is adjacent to Qingdao International Airport to the east and Jinan International Airport to the west. The Jiaoji Railway, Jiqing Expressway, and 309 National Highway cross the Changle urban area, and are 1 kilometer away from the railway freight station.