Mara tef, wanda kuma aka sani da tef ɗin polyester, yana amfani da fim ɗin polyester a matsayin kayan tushe da acrylic flame retardant adhesive a matsayin m.Launukan sa sune rawaya mai haske, rawaya mai duhu, shuɗi, ja, kore, baki, fari, bayyananne, da sauransu. Ya dace da insulation a cikin masana'antar lantarki, irin su transfoma, moto, capacitors da sauran injina da kayan lantarki.