Gelonghui, January 10 | ST Hengjiu (002808.SZ) said on the investor interactive platform that the company's main business involves the two major industries of “imaging consumables+information security”. (1) “Imaging consumables” is the R&D, production and sales of the company's laser organic light guide drum series products; (2) “Information Security” is the R&D, production and sales of information security and confidentiality technology and products involving the holding subsidiary Fujian Minbao Information Technology Co., Ltd.