Design horizontally telescopic two layer rack with stretchable length between 53 cm and 88 cm, set two height fixing positions on 48.50 cm vertical frame for interlayer adjustment.
Select heavy weight carbon steel as manufacturing material and add waterproof anti rust coating to adapt long term humid working environment under kitchen and bathroom sinks.
Separate upper and lower storage layers to leave reserved space for pipeline passing and avoid forced extrusion and deformation of drainage pipes.
Break single sink bottom usage limit to organize cleaning supplies toiletries and pantry dry goods for multi room household centralized classification management.
Split shelf panels and baskets into detachable independent parts, level four supporting legs fully before tightening fixing screws to guarantee placement balance.
