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Supply decreasingIn recent years,the development speed ofdomestic BR(cis-1,4-polybutadienerubber) lags significantly behind SBR(styrene-butadiene rubber.).The produc-tion of
Supply decreasingIn recent years, the development speed of domestic BR (cis-1,4-polybutadienerubber) lags significantly behind SBR (styrene-butadiene rubber.). The produc-tion of