January 29 (Reuters) - The mainstream spot price range for mixed xylene in East China is 5,790-5,840 yuan per ton, up 30 yuan per ton from the previous trading day. In the previous trading day, toluene and xylene markets continued to strengthen, supported by rising crude oil prices, with industry participants showing strong intentions to hold firm on prices during the day. The weakening of PX futures in the night session restrained the upward movement of mixed xylene, while the relative strength of benzene drove toluene, resulting in a predominantly strong and volatile trend in the aromatic hydrocarbon market during the day.