Polyester chip prices went up this time in the Asian market driven by the increase in raw material costs. Polyester chips prices softened at the beginning of this last fortnight but then increased by the end of the first half in the Chinese domestic market. Polyester chip prices further went up during the second half in the Chinese domestic market due to strong feedstock price and tight spot supply. PET bottle grade chip prices went up during the second half as suppliers raised offers on rising cost.