Lub opaque PVC U-channel muaj qhov sib npaug ntawm ceg ntev thiab sib npaug ntawm cov ces kaum thiab ua tau raws li Cov Tsev Kawm Ntawv Qib Siab UL 94 thiab American Society for Testing and Materials ASTM D1784 specifications. PVC (polyvinyl chloride), tseem hu ua vinyl, yog cov yas ruaj khov uas muab qhov sib npaug zoo ntawm lub zog thiab qhov hnyav, thiab feem ntau tiv taus cov kua qaub, alkalis, thiab feem ntau lwm yam tshuaj inorganic. Cov khoom siv kuj tseem muaj qhov ruaj khov, vim yog ib feem ntawm nws qhov nqus dej tsawg.
U Channel Tensile lub zog, siv los qhia cov khoom siv lub zog tag nrho, yog qhov siab tshaj plaws uas nws tuaj yeem tiv taus ua ntej nws tawg. Corrosion resistance piav qhia txog cov khoom muaj peev xwm los tiv thaiv kev puas tsuaj los ntawm huab cua, noo noo, lossis lwm yam nruab nrab. Hnav tsis kam qhia tias muaj peev xwm tiv thaiv kev puas tsuaj los ntawm kev sib cuag nrog lwm qhov chaw. Toughness piav qhia txog cov khoom muaj peev xwm nqus tau lub zog ua ntej tawg, thaum hardness (feem ntau ntsuas raws li indentation hardness) piav qhia txog nws qhov tsis kam mus rau qhov deformation mus tas li. Impact resistance yog qhov ntsuas ntawm cov khoom muaj peev xwm nqus tau lub zog poob siab ua ntej tawg.