Sekontiri ke mokelikeli o motšo o nang le ponahalo e phahameng haholo kapa mofuta o tiileng oa petroleum. E ka fumanoa libakeng tsa tlhaho tsa liminerale. Tšebeliso e ka sehloohong ea asphalt (70%) ke mohahong oa litsela, e le sekontiri kapa sekhomaretsi sa konkreite ea asphalt. Tšebeliso e 'ngoe ea eona e ka sehloohong ke lihlahisoa tsa asphalt tse thibelang metsi, ho kenyelletsa le thepa ea marulelo ea ho thibela mongobo bakeng sa ho koala marulelo a bataletseng.

Ts'ebetso ea tlhahiso ea ho kopanya asphalt e kenyelletsa ho kopanya likarolo tsa granite le asphalt ho fumana motsoako oa asphalt. Motsoako o hlahisoang o sebelisoa haholo e le thepa ea ho betla tsela. Boholo ba matla a ts'ebetso a sebelisetsoa ho omisa le ho futhumatsa li-aggregates. Hona joale Sinoroader Group e fana ka moloko o mocha oa limela tse kopanyang asphalt tse finyellang litlhoko tsohle tsa morao-rao bakeng sa ho lumellana le tikoloho, ho tšepahala ha ts'ebetso, ho etsa asphalt ea boleng bo phahameng. Leano la boleng ke e 'ngoe ea lintlha tsa bohlokoa tsa khoebo.
Sinoroader Group e sebelisa mahlale a macha le mekhoa ea mekhoa, e arabela ka mokhoa o tenyetsehang litlhoko tsa bareki, litlhoko tse etsang hore ho khonehe ho etsa lihlahisoa tsa boleng bo phahameng le ho finyella litlhoko tsa bareki ka botlalo: ho rekisa thepa ka theko e feletseng, likarolo tsa pele tsa lisebelisoa le lisebelisoa, ho etsa kopano, ho laela le ho finyella litlhoko tsa bareki. ho lemoha sekoli, ho fana ka tiisetso, ho ntlafatsa polante ea tlhahiso le ho koetlisa lilemong tse fetileng.