China 3 O Ethyl VitaMin C Ester manufacturers Qingdao Hailihua Chemical Technology Co., Ltd. is located in the beautiful west coast of Qingdao, China, one of the top five major ports in China. xanthic acid ethyl formate series, xanthic acid acryl ester series products.China 3 O Ethyl VitaMin C Ester manufacturers website:http://www.hlhchemicals.com/