Lisebelisoa tsa mantlha tsa li-caster ke life? Lisebelisoa tsa mantlha tsa li-caster ke life? Polyurethane, tšepe e entsoeng ka tšepe le tšepe e entsoeng ka tšepe, lebili la rabara la nitrile (NBR), rabara ea nitrile, lebili la rabara la tlhaho, lebili la silicone fluororubber, lebili la rabara la chloroprene, lebili la rabara la butyl, rabara ea silicone (SILICOME), rub ea EPDM...
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