Essex Bio-Technology Limited (“Essex”) was listed on the Growth Enterprise Market (GEM) of The Stock Exchange of Hong Kong Limited on 27 June 2001, under stock code (8151).

Essex specializes in biopharmaceutical drug development based on recombinant DNA technology.  It was principally engaged in the manufacture and sale of biopharmaceutical products for the treatment and healing of surface wounds and eye wounds and the research and development of biopharmaceutical products for the treatment of duodenal ulcers and nervous system damages and diseases, as well as other ophthalmic pharmaceutical projects.