In terms of special chemicals business, mainly has different indole moiety hydrochloride, 1,2,4,5 - four tertiary butyl benzene sulfur ether, 4, 5 - two iodine imidazole, 2, four, five - three iodine imidazole, 5 - bromine isoquinoline, trans - (1 r, 2 r) - 2 - amino - cyclopentanol hydrochloride, the trans - (1 s, 2 s) - 2 - amino - cyclopentanol hydrochloride, the trans - (1 s, 2 r) - 2 - amino - cyclopentanol hydrochloride, the cis - (1 r, 2 s) - 2 - amino - cyclopentanol hydrochloride, trans, trans - farnesol, bromine - 2-4 - picolinate, chlorine pyridine - 4-2 - methyl formate, 5 - bromine - 2 - methyl - 3 - nitro pyridine, 5 - methyl nicotinic acid, 3 - hydroxy isoquinoline, 2 - amino thiophene - 3 - carboxylic acid methyl ester, 2 - amino - 4 - methoxy pyridine, 2 - amino - 6-4 - amino four hydrogen chloride pyrazine, pyran, N - tert-butyl carbonyl oxygen - 1, 4 - butyl diamine, 5 - bromine - 7 - nitrogen impurity indole, 7 - nitrogen impurity indole - 5 - frequency that boric acid glycol ester, the champions league - 6 - ene (Calix [6] arene), the champions league - 8 - ene (Calix [8] arene) and other products.