Ho tloha ha e qala ka 1998, Shandong Subang Fluorescence Technology Co., Ltd. e tsepamisitse maikutlo feela ho R & D, tlhahiso le thekiso ea li-agent tse soeufatsang tsa fluorescent le li-intermediate tsa tsona.
E fumaneha Yucheng, Toropong ea Dezhou, Shandong Subang e inehetseng ho R&D, ho etsa le ho rekisa lisebelisoa tse khanyang ho tloha ka 1998.