Product Name	CAS No.	Chinese name	Molecular formula	Used
ODB-2	89331-94-2	2-Anilino-6-(dibutylamino)-3-methylfluoran	C35H36N2O3	dye for the production of thermal paper
PF201	232938-43-1	3-({[(4-methylphenyl)sulfonyl]carbamoyl}amino)phenyl 4-methylbenzenesulfonate	C21H20N2O6S2	chromogenic agent of Thermal paper
DPS	127-63-9	Diphenyl sulfone	C12H10O2S	It is used as a chromogenic agent for thermal paper, polysulfone resin, and flame retardant.
BPS	80-09-1	Bisphenol S; 4,4'-Sulfonyldiphenol	C12H10O4S	It is used as a chromogenic agent for thermal paper, a monomer for synthesizing polysulfone resin, and can also be directly used in coatings, leather modifiers, dye intermediates, metal plating brighteners, etc.
DBSP	177325-75-6	Bis(phenylsulfonyl)phenol	C18H14O5S2	Heat-sensitive chromogen
TGSH	41481-66-7	2,2'-diallyl-4,4'-sulfonyldiphenol	C18H18O4S	Heat-sensitive chromogen
DPE	104-66-5	1,2-Diphenoxyethane	C14H14O2	Heat-sensitive sensitizer
BON	613-62-7	BENZYL-2-NAPHTHYLETHER	C17H14O	Heat-sensitive sensitizer