装修建材板块1月12日涨1.22%，中钢洛耐领涨，主力资金净流出1.56亿元

Group 1 - The renovation and building materials sector increased by 1.22% on January 12, with Zhonggang Longnai leading the gains [1] - The Shanghai Composite Index closed at 4165.29, up 1.09%, while the Shenzhen Component Index closed at 14366.91, up 1.75% [1] - Notable stock performances included Zhonggang Longnai with a 20.00% increase, closing at 7.86, and other significant gainers such as Yubang Diao Ding and Ru Tai Technology, which rose by 10.00% and 9.83% respectively [1] Group 2 - The renovation and building materials sector experienced a net outflow of 156 million yuan from main funds, while retail investors saw a net inflow of 114 million yuan [2] - The top stocks by main fund inflow included Luyang Energy with 83.81 million yuan, followed by Yubang Diao Ding with 41.55 million yuan [3] - Conversely, retail investors showed a negative net flow in several stocks, including Luyang Energy and Yubang Diao Ding, indicating mixed investor sentiment [3]