POY(POLYSTER PRE-ORIENTED YARN), FDY(POLYESTER FULLY DRAWN YARN), DTY(POLYESTER DRAW TEXTURED YARN ,INCLUDING INTERLACED YARN) DTY 50D-600D AA GRADEPOY 50F-450D AA GRADEFDY 68D-500D AA GRADE DTY, FDY, POY,PRE-ORIENTED YARN,FULLY DRAWN YARN,POLYESTER DRAW TEXTURED YARN ,INCLUDING INTERLACED YARN