Magnesian GM & RM Magnesian Calcium GM & RM, Magnesian Olivine GM & RM, Magnesian Calcium Refractory for Furnace Bottom and Furnace Wall, Calcined Olivine etc. gunning mix as well as Ramming Mass and Refractory for Furnace Bottom. Note: Our Engineer can go to your factory and supply the technical support so that we could provide the suitable materials according to the type of your furnace. Origin: China