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Rosin Rapin Rap Sor series - Sor145 / 146
Nws yog ib hom rosin pentaerythritol resin tshwj xeeb tsim rau kub yaj cov kev lag luam nplaum. Nws muaj qhov zoo ntawm lub teeb xim, siab softening point, siab viscosity thiab zoo cua kub tiv taus. Tshwj xeeb tshaj yog qhov tsim nyog rau Eva Kub qhuav nplaum thiab kub yaj Txheej txheej thiab lwm yam kev lag luam.
