非金属材料板块12月9日涨0.74%，坤彩科技领涨，主力资金净流出4500.28万元

Group 1 - The non-metal materials sector increased by 0.74% compared to the previous trading day, with Kuncai Technology leading the gains [1] - The Shanghai Composite Index closed at 3909.52, down 0.37%, while the Shenzhen Component Index closed at 13277.36, down 0.39% [1] Group 2 - In terms of capital flow, the non-metal materials sector experienced a net outflow of 45.0028 million yuan from main funds, while retail funds saw a net inflow of 36.7197 million yuan [2] - Speculative funds had a net inflow of 8.2831 million yuan into the non-metal materials sector [2]