Tam sim no peb lub tuam txhab pom zoo kom lub siab softening point petroleum resin rau thermoplastic txoj kev xim xim kev lag luam, thiab lub softening point yog hais txog 120 â¢, Cov nram qab no yog qhov kev ntsuam xyuas rau peb ntau ntau yam khoom.
Ua raws li kev lag luam hauv paus ntsiab lus ntawm kev sib nrig sib pab, peb muaj kev zoo siab thiab ua tiav kev lag luam, peb xav tias peb yuav yog tus khub lag luam zoo tshaj plaws.