On August 21, the spot market for polyester bottles and chips in East China was narrowed. The market price for goods from August to September was around 6,700 - 6,850 yuan/ton, and the price for goods from October was 6,700 - 6,800 yuan/ton. The PTA market of polyester raw materials was consolidated, and the cost support was solid. The quotations of mainstream bottle and chip manufacturers were slightly adjusted, and dealers 'quotations were low end.