China Nanowin 10mm*10.5mm Small Pieces of Free-Standing GaN Substrates (Customized size, Un-doped, Si-doped, Fe-doped), Find details about China GaN Substrates, Gallium Nitride Substrates from Nanowin 10mm*10.5mm Small Pieces of Free-Standing GaN Substrates (Customized size, Un-doped, Si-doped, Fe-doped)