NAVIGATION
Aluminum oxide substrate, 12.7x12.7x1mm, polished one side, C plane
Sapphire substrate, 10x10x0.432mm, EPI polished one side, C-axis, LED grade
Sapphire substrate, 10x10x0.432mm, EPI polished two sides, C-axis, LED grade
Sapphire substrate, 50.8mm dia x 0.432mm thick, EPI polished one side, C-axis, HEMCOR single crystal