... E. 430 employees,15000 square meter factory Product DescriptionAD22(LED)series of indicator is equally used LED shining chip as light ... , we developAD22-22B, C, D, E, G, H, double color lamp, position indicator, shining buzzer and mini short indicator, as well ... as design shape of AD22-22G/22GS series button and it is possible to meet all kinds of ...