Vanyori veichi chinyorwa chekutsvaga cha2014 vakaita kutsvagisa kunoguma nezvikamu gumi nezviviri zvehurefu zvekutungamira kumashure kwepashure resin yakaunganidzwa kudzoreredza pamwe neanosvika makore mashanu 'ekutevera. Vanotsanangura, "paavhareji, yekumashure resini yezvakadzoreredzwa zvinoratidzira kurarama kwakanaka, pamwe nekukundikana kwegore rega kwe 12% pamakore mashanu uye 5% mushure memakore gumi ebasa."
Dzvanya pano kuti verenga chinyorwa chose.
