1.top and tray material:ABS,3.5mm,reinforced with 3layer fiber glass and resin
2.aluminium frame:1.3mm.painted in black color
3.front door glass:4mm clear tempered glass.
4.Z11 Z13 Z13A Z15 Z17 Z51 Z51A Z53 Z55:back board is the composite plate,common computer controller
5.Z12 Z14 Z16 Z18 Z20 Z52 Z54 Z56 Z58:black painted back glass,touch screen computer controller.
6.fan;with 12pieces LED light top shower;cold&hot water faucet;hand shower;metal article shelf;6 back jets
7.stainless steel adjustable botton support
optional function:1.steam 75USD; 2.FM radio 18USD; 3.foot massage 8USD