On May 4th, mainstream brand prices excluding taxes were quoted as follows: Zhenjiang Qimei PG33 quoted 9450 RMB/ton, Taiwan Taihua 5250 quoted 9950-9980 RMB/ton, Ningbo Taihua 535N quoted 8770 RMB/ton, Shanghai SECCO 123P quoted 9240 RMB/ton, Thai Petrochemical 150 quoted 8830 RMB/ton, Guangzhou Petrochemical 525 quoted 8470 RMB/ton, Hong Kong Petrochemical 1841H quoted 8360 RMB/ton.