1. United States muna 1988 rubber accelerator kugadzirwa ndiyo yekutanga yenyika
1.1 kutonga musika weRabha anowedzera
Muna 1988, United States ndiyo yako yakakura kwazvo varidzi vepasi rose, iyo yekutanga nyika yekudhara, iyo} vamiririri).
1.2 Pane akawanda mafekitori ebabar aucer
Vanopfuura makumi maviri maFakiti, kugadzirwa kwemhando dzinosvika mazana maviri emhando dzekurara 61% {{10]
1.3 nzira yekutsvagisa yerabha yerabha
United States inoshanda kwazvo mukutsvagisa kwemabhuku erabha, kune huwandu hukuru hwemabhuku egall, iwo marudzi ese ekutsvaga nzira dzekunyika Kechipiri, tsvagudzo pane yetaukutuka uye chengetedzo yekugadzira inofanira kusimbiswa
Panguva iyoyo, China's Rubber Indasitiri yaive muchikamu chekutanga chekuvandudzwa muma1980s, iyo}
