The phthalic anhydride commodity index was 67.15 on October 9, which was 0.49 points lower than October 8, which was 44.10% lower than the highest

On September 5, the phthalic anhydride commodity index was 63.10, up 1.46 points from yesterday, down 47.47% from the cyclical peak of 120.13 points (2012-02-28),

On September 2, the phthalic anhydride commodity index was 59.85, up 2.1 points from yesterday, down 50.18% from the cyclical peak of 120.13 points (2012-02-28),

On August 28, the phthalic anhydride commodity index was 57.75, up 0.33 points from yesterday, down 51.93% from the peak of 120.13 points in the