IFulansi neNingizimu Melika nazo zinezinye izinsiza zokukhiqiza i-rubber, kodwa isikali sincane kakhulu.
Ukwenziwa kwama-additives e-rubber emhlabeni jikelele ngo-2013 kwaba ngaphezu kwemithoni eyizigidi eziyi-4, imikhiqizo yaseShayina iyizigidi eziyi-1. Ukuhlinzwa nokufuna emhlabeni jikelele kuphakathi kokuzinzile, kusebenza ngokuphuma okuphakathi kokukhula okungama-%4, nezindawo ezithuthukile njengeYurophu ne-US zingama-%5, kanti ukukhula e-Asia kuphakeme njenge-%6.
Ukusetshenziswa komuthi ophumayo emhlabeni jikelele ngo-2013 kwaba cishe ama-tonu angama-500, lapho ama-amphetamine enza u-56%, ama-quinoline enza u-20%, nezinye izimpahla zomuthi ophumayo njenge-phenols, aniline, ama-phosphate esters nokunye ziningi ezingaphansi kuka-10%.
I-catalyst inezinto ezingu-400, lapho i-dosage ye-sub-sulfonyl amine iyinto yokuqala, i-sulfur engahlali kahle ephuzi enezinto ezingu-180.