近年 ,我国丁苯橡胶进口量持续增长 ,1 997年进口 1 1 .2万ｔ,1 999年进口达 1 2 .9万ｔ,再加上大量非正常渠道的进口 (正式报关进口的仅占36% ) ,使国产丁苯橡胶市场占有率下降。目前 ,国产丁苯橡胶市场占有率仅达 70 %。据预测 ,今后几年我国丁苯橡胶的需求将快速增长 ,2 0 0 In recent years, China’s imports of styrene-butadiene rubber have continued to increase. In 2001, it imported 112,000 tons. In 1999, imports reached 129,000 tons, plus a large number of imports from irregular channels (only formal import declarations 36%), the market share of domestic styrene-butadiene rubber decreased. At present, the domestic market share of styrene-butadiene rubber is only 70%. It is predicted that the demand for styrene-butadiene rubber in China will grow rapidly in the next few years, 200