Txheej txheem cej luam Ntawm Cov Khoom Siv Tseem Ceeb Ntawm Lub Hnub Qub Ceg Roj Hmab Roj hmab

Pawg kws tshuaj ntsuam xyuas muaj cov kws tshaj lij xws li Jiao Xigao thiab Chen Fener, tus kws tshaj lij ntawm Suav Academy ntawm Engineering, tau pom zoo tias lub hnub qub tshiab ceg tawv butyl roj hmab thev naus laus zis yog cov thev naus laus zis tseem ceeb hauv kev tsim kev lag luam ntawm cov log tsheb siab thiab ntev. -kev ua neej vulcanized tsiav tshuaj nyob hauv Suav teb, thiab nws tseem yog lub tshuab ua kom kev txhim kho kom zoo dua qub thiab ua tiav cov roj hmab butyl hauv Suav teb. Ua nrawm nrawm ntsuas qhov ntsuas qhov ntsuas tshuab qhov ntsuas