Lub qhov rai tsev (Lub tsev dab neeg hauv tsev) muaj ntau yam khoom siv rau hauv cov ntaub duab hluav taws xob polyester cov ntaub ntawv, daim ntawv cog lus ntawm lub iav vaj tse, siv los txhim kho lub iav kev ua haujlwm thiab lub zog, tsis tsuas tuaj yeem ua hluav taws xob thaiv, anti-ultraviolet, iav flexural zog, feem zog,
Kom tsis txhob muaj kev puas tsuaj los ntawm iav fragmentation thiab kev raug mob ntawm kev raug mob, kev tiv thaiv, kev ua tub sab thiab lwm yam haujlwm.