... 3.Patent No.: ZL2007203106592 Bathtub Features:1. Portable, folding, heat insulation, removable,durable, save water & space,dismountable,easily fold, ... : not only enhanced the stability of the bathtub, water conservation, and effectively extend bath time. Baths is ... than 1 hourFeatureFolding, Removable, Portable, Simple operation, Save water and space, Lasting heat insulation ect Service lifeOver 10 ...