April 14 (Reuters) - The mainstream quotation range for toluene in the Shandong region is 7,350-7,500 yuan/ton, with prices down 150 yuan/ton compared to the previous trading day. International crude oil futures closed slightly higher, but provided limited overall support to the market. The prices of MX and PX in the overseas market rose, coupled with steady trading performance in the domestic market yesterday, further strengthening producers' determination to maintain stable prices. The domestic spot market weakened slightly today.