wpc inner corner, easy installation NO stick NO crack NO scratch NO mould Water/flame/moth/noise/UV resistant Fading within 15% We provide wpc building materials such as outdoor/indoor wall panels, outside/inside decking, interior/exterior ceiling, window shades, installation fittings. All our product made of 68% wood powder + 22% pvc + no harm ingredients, no methyl alcohol, are all-natural wood ...