摘要
Slow import growthNBR(acrylonitrile-butadiene rubber)is aspecial synthetic rubber with considerabledemand today.China has four NBR pro-duction units in three enterprises.The totalcapacity was 49 500 t/a in 2008 and theoutput was 41 800 tons.The capacity ofPetroChina Jilin Petrochemical
