A. Roj hmab fenders yog tsim los ntawm vulcanizing ib tug sib tov ntawm ntuj roj hmab thiab hluavtaws roj hmab.
B. Cov pa roj carbon dub, tus neeg saib xyuas kev laus thiab lwm yam khoom siv ntxiv rau hauv cov roj hmab sib xyaw kom txhim kho lub cev thiab cov khoom siv ntawm cov roj hmab fender, nrog rau cov seawater corrosion kuj, anti-aging thiab ozone kuj.
C. Cov khoom siv nplaum yog zoo ib yam thiab zoo ib yam, thiab tsis muaj impurities (tshwj xeeb impurities), npuas, khawb, tawg, thiab lwm yam tsis xws luag uas yuav cuam tshuam rau cov khoom zoo.