No.of shelves/tray: standard 4 Items per tray/shelves: 4 each shelf can be sold: 4 *shelves and springs can be adjusted according to the products to suit the products sold: spacing, height, quantity
White, White Black (OEM), can be customized, White/black/Pattern sticker, white or black customize
10.1inches
Yes, Always for Free, No Monthly fee. Can accept software function customization