1, 4-butanediol is an important organic and fine chemical raw material, mainly used for the production of tetrahydrofuran (THF),
γ -butanolactone (GBL), polybutylene terehalate (PBT), polytetramethylene glycol (PTMEG) and polyurethane (PU), in addition to the preparation of vitamin B6, the production of N-methylpyrrolidone (NMP) , N-vinyl pyrrolidone (NVP),
adipic acid, acetal and 1, 3-butadiene, used as intermediates in the production of medicine and pesticides, used as solvents, coating resins, humidifiers, softeners, chain growth agents and cross-linking agents, in the rmaceutical, chemical, textile, paper making, automotive and daily chemicals and other fields are widely used.