炼化及贸易板块8月15日涨0.17%，桐昆股份领涨，主力资金净流出4.12亿元

Group 1 - The refining and trading sector increased by 0.17% on August 15, with Tongkun Co., Ltd. leading the gains [1] - The Shanghai Composite Index closed at 3696.77, up 0.83%, while the Shenzhen Component Index closed at 11634.67, up 1.6% [1] Group 2 - On the same day, the refining and trading sector experienced a net outflow of 412 million yuan from main funds, while retail investors contributed a net inflow of 165 million yuan [2] - The table provided shows various companies' net inflows and outflows, with notable figures such as 12.73 million yuan net inflow for Unified Holdings and 7.99 million yuan for Taishan Petroleum [2]