SBR1502 is widely used in tyre,wire,conveyer belt,airproof circle,rubber pipe,rubber sole etc .The products are of high quality, Technical specifications(SBR 1502)Testing ItemIndexTest MethodSuperior GradeFirst GradeQualifiedVolatile matter(%)≤0.600.750.90GB/T6737Ash content≤0.50GB/T4498AOrganic acid(%)4.50~6.75GB/T8657ASoap content(%)≤0.5Combinated Styrene content(%)22.5~24.5GB/T8658Raw rubber ...