#1,4-#Butanediol (BDO), #Polytetramethylene #Ether #Glycol (PTMEG), and #Spandex #market is driven by strong demand from the textile, automotive, and plastics industries. BDO is an important chemical intermediate used to produce PTMEG, which is a key raw material for manufacturing spandex fibers widely used in stretchable clothing and sportswear. The market is expanding due to the growing popularity of athleisure, performance textiles, and lightweight industrial materials, particularly in Asia-Pacific. Major companies in this market include BASF, Dairen Chemical Corporation, Hyosung, and Invis