The overnight trading sessions on the Dalian Commodity Exchange (DCE) and Zhengzhou Commodity Exchange (CZCE) concluded with a mixed bag of performance. Styrene prices experienced a significant decline of more than 2%, while prices for PX (paraxylene) and PTA (purified terephthalic acid), among other varieties, also fell by over 1%. Polypropylene (PP) and starch prices witnessed minor decreases. Conversely, coking coal and rapeseed oil prices registered gains of more than 1%, and caustic soda and soda ash prices inched upwards slightly.