Editan edphatal hada shuka hade da tsire-tsire zai gabatar da nau'ikan shaffiers masu toka:
Tare da ci gaban tattalin arzikin kasa, yawan zirga-zirga yana samun girma da girma, nauyin abin hawa yana da nauyi, kuma zazzabi yana da dumama a hankali. Babban zirga-zirga na zirga-zirga na zirga-zirga ba zai iya biyan bukatun amfani da manyan hanyoyin manyan hanyoyi da sassan musamman ba. Domin inganta hanyar tsayayya da juriya na dindindin, rutting, bushewa, crackracts crackings, tsufa, da sassan ruwa na filassi don inganta aikin yanar gizo na gaba.

Abin da ake kira asphalt sasphal shine ƙara masu daidaitawa da dacewa (ɗaya ko fiye) zuwa isphalt ɗin gindi da kuma biyan bukatun ko hanyar buƙatun amfani.
Rikicin Hankali: polyethylene pe, eva, da sauransu.;
Rufin resistics: Gudun Phenolic, guduro epo, da sauransu.;
⒊rubber: Roba Nr, SBR, CR, Iir, da sauransu.;
EtherMillastic olastomicus: sb, ss, sebs, da sauransu.;
Kwakwal Kwallant: Lake Missalt, Kwalta Rock, da dai sauransu.
Thermoplastic ellascavalastic elastomer sbs yana da dacewa mai kyau kuma tsarin ajiya mai tsaro tare da ayyukan babban zazzabi; SBS ita ce mafi yawan kwanon rufi mafi yawan lokuta a gida da waje.
SBS wani m elastomer ne na therdomstic, wanda ya kasance mai ɗaukar hoto ko kuma Profization na anionic tare da bututun da ke ciki, n-butterDrofyan a matsayin mai kunnawa. A sbs polymer sarkar yana da tubalan tsari daban-daban tsarin, wato sunan filastik da roba, samar da tsarin-kamar tsari. Saboda wannan tsarin gama gari, yana da duka tsayayyen tsayayyen da filastik na filastik da sassauci da kuma elasticity na roba.