化工股集体走强，长华化学涨超10%

Core Viewpoint - The A-share market saw a significant rally in the chemical sector, with multiple stocks experiencing substantial gains on February 12, indicating strong investor interest and potential growth in this industry [1]. Group 1: Stock Performance - Changhua Chemical (301518) rose by 10.57%, with a total market capitalization of 65.46 billion and a year-to-date increase of 26.51% [2]. - Meibang Shares (605033) increased by 10.00%, with a market cap of 35.23 billion and a year-to-date rise of 29.78% [2]. - Jianxin Shares (300107) saw a gain of 9.80%, with a market value of 49.19 billion and a year-to-date increase of 28.15% [2]. - Weike Technology (301196) grew by 8.98%, with a market capitalization of 108 billion and a year-to-date increase of 7.65% [2]. - Kexin Source (300731) increased by 6.92%, with a market cap of 83.04 billion and a year-to-date rise of 16.83% [2]. - Huide Technology (603192) rose by 5.80%, with a market value of 39.31 billion and a year-to-date increase of 5.68% [2]. - New Jinlu (000510) saw a gain of 5.58%, with a market capitalization of 113 billion and a year-to-date increase of 50.26% [2]. - Zhenhua Shares (603067) increased by 5.38%, with a market cap of 263 billion and a year-to-date rise of 28.57% [2]. - ST Yatai (000691) rose by 5.02%, with a market value of 41.56 billion and a year-to-date increase of 21.56% [2]. - Guangkang Biochemical (300804) increased by 4.00%, with a market cap of 33.87 billion and a year-to-date rise of 30.77% [2]. - Hangjin Technology (000818) saw a gain of 4.00%, with a market capitalization of 163 billion and a year-to-date increase of 28.03% [2]. - Hongda Shares (600331) rose by 3.98%, with a market value of 463 billion and a year-to-date increase of 36.90% [2]. - Demei Chemical (002054) increased by 3.31%, with a market cap of 52.65 billion and a year-to-date rise of 47.97% [2]. - Huangma Technology (603181) saw a gain of 3.17%, with a market capitalization of 99.49 billion and a year-to-date increase of 18.26% [2]. - Runmu Materials (300727) rose by 3.14%, with a market value of 65.73 billion and a year-to-date increase of 2.38% [2]. - Litong Technology (920225) increased by 3.09%, with a market cap of 38.08 billion and a year-to-date decrease of 6.40% [2].