爱博医疗目标价涨幅超70%，荣盛石化、珀莱雅评级被调低｜券商评级观察

Group 1 - The core viewpoint of the article highlights significant target price increases for certain companies, with Aibo Medical, Lingyun Co., and Haoyue Nursing leading the rankings with target price increases of 70.94%, 54.33%, and 51.42% respectively [1] - On November 4, a total of 67 target price adjustments were made by brokerages for listed companies, indicating active market analysis and adjustments [1] - Two companies had their ratings downgraded on November 4, specifically Rongsheng Petrochemical from "Strong Buy" to "Buy" by Founder Securities, and Proya from "Buy" to "Hold" by Jianghai Securities [1]