Ⅰ. Retrieval of Foreign Cooperation of China’s Auto Industry 1. Foreign Investment 353 FDI enterprises with 20 foreign countries and areas established. 1.5 b
Two polymeric adsorbents, poly(methyl p-vinylbenzyl ether) and poly(phenyl p-vinylbenzyl ether), were synthesized from chloromethylated polystyrene. Their adso
The catalytic performance of some quaternary ammonium salts for the liquid phase reaction of butanol and hydrochloric acid at different conditions was studied e