Roj hmab log tsheb sib xyaw ua ke yog txheej txheem nyuaj uas yuav tsum tau ua tib zoo xaiv cov ntaub ntawv kom ua tiav cov yam ntxwv ua tau zoo. Peb tau tshawb pom tias peb cov SHR-86 series ntawm C5 hydrocarbon resins yog cov khoom tseem ceeb uas tuaj yeem txhim kho txoj haujlwm no ...
Raws li qhov kev thov rau cov nplaum ua tau zoo txuas ntxiv mus thoob plaws kev lag luam, qhov kev xav tau rau cov kev daws teeb meem zoo tau dhau los ua qhov tseem ceeb. C5 hydrocarbon resins, tshwj xeeb tshaj yog cov SHR-18 series, tau dhau los ntseeg thiab ntau yam ...