Grirem Advanced Materials Co., Ltd. mainly engaged in the R&D and manufacturing of RE magnetic effect materials, RE luminescent materials, RE metals and alloys, RE compounds and other materials.

Grikin Advanced Materials Co., Ltd. mainly engaged in the R&D and manufacturing of microelectronics and optoelectronics film materials, biomedical materials, and precious metals materials.

GRINM Electro-optic Materials Co., Ltd. mainly engaged in the R&D and manufacturing of Infrared optical and optoelectronic materials.

GRINM Guojing Advanced Materials Co., Ltd. mainly engaged in the R&D and manufacturing of Infrared optical and optical fiber materials.