一周牛熊股丨40股累计涨幅超30%，最牛股本周涨近75%

Group 1 - A total of 40 stocks increased by over 30% this week, with the largest increase being 74.8% for Guangdao Tui [1] - The mechanical equipment industry led the gains, with 6 stocks listed, followed by the construction decoration industry with 5 stocks [1] - In the decline list, 56 stocks fell by over 10%, with Bohai Chemical experiencing the largest drop of 28.32% [1] Group 2 - Other notable declines include China High-Tech, Baibang Technology, and Luokai Co., all of which saw cumulative declines exceeding 20% [1]