used for construction interior finishing Specification 600x600mm,300*300mm,300*600mm,300*1200mm,600* ... is with nice looking and easy to install.False ceiling Material:galvanized steel or aluminum,False ceilingSpecification 600x600mm,300*300mm,300*600mm,300 ... .PENNON offer kinds of ceilings for client,we also offer interior design and machining service. round air diffuser, ceiling diffuser