Nzira yekusarudza hydrogenated C5 petroleum resin uye yakagadziridzwa mvura yakachena rosin resin mune adhesive industry.
A.
B. Yakagadziriswa mvura-white rosin resin ine yakanaka yekutanga tack uye inogara kwenguva refu
C. Rosin resin inonyanya kukoshesa zvakatipoteredza
D.
