Realsunchem was established in 1987, reorganized of United Chemical Factory in 1995, and set up Realsun Chemical Industry Co.,Ltd. in 1999. Realsunchem is striving to improve reseach and development, meet social and customer''''''''''''''''''''''''''''''''s needs with a unifying strategic idea. we are engaged in developing and producing the products of Gamma-butyrolactone series. We produce pharmaceutical intermediates and fine chemicals of pyrrolidone with Gamma-butyrolactone as the main raw materials, and produce ramification intermediates of cyclopropyl and cyclopropane with 2-acetyl-Gamma-butyrolactone as the main material. This series of products mainly include: gamma- butyrolactone, 2-acetyl-gamma-butyrolactone, 5-chloro-2-pentanone, 2-pyrrolidone, N-methyl-2-pyrrolidone, cyclopropyl methyl ketone, dicyclopropyl ketone, cyclopropanecarboxylic acid, methyl cyclopropanecarboxylate, cyclopropanecarbonyl chloride, cyclopropyl carbinol, cyclopropyl methyl chloride, cyclopropyl cyanide, 2-amino-5-diethylamino pentane and so forth.