40股累计涨幅超30%，最牛股本周涨近75%

Group 1 - This week, 40 stocks experienced a rise of over 30%, with the largest increase being 74.8% for Guangdao Tui [1] - An Tong Holdings, Jiamei Packaging, Shenjian Co., and Shengtong Energy all saw cumulative increases of over 60% this week [1] - The machinery equipment industry led the gains, with 6 stocks listed, followed by the construction decoration industry with 5 stocks [1] Group 2 - In the decline category, 56 stocks fell by more than 10% this week, with Bohai Chemical leading the drop at 28.32% [1] - Other notable declines include China High-Tech, Baibang Technology, and Luokai Co., each with cumulative declines exceeding 20% [1]