下跌10年的“中字头”，有的已跌90%，什么时候到底，还会跌吗？

Group 1 - The article discusses the long-term decline of several Chinese stocks, highlighting that some may take years to recover, testing investors' patience [1] - China First Heavy Industries has a market capitalization of 18 billion, with its stock price dropping 88% from 21.37 to 2.65 over the past decade, remaining stagnant between 2 and 3 yuan for eight years [3] - China Aluminum has seen a 90% decline from a peak of 60.10 to 6.62 over 18 years, with a significant drop of 96% from 2.6 five years ago [4] - China Shipbuilding Industry Corporation has a current stock price of 4.32, down 80% from 20.12 ten years ago, with 580,000 investors still holding [6] - China Power Construction has a stock price of 4.71, down 85% from 19.06 ten years ago, despite recent performance improvements [7] - China Railway has a current stock price of 5.58, down 76% from 22.55 ten years ago, with 470,000 shareholders [9] Group 2 - The article notes that despite some companies having good fundamentals, their stock prices remain in a downward trend, raising questions about when they will bottom out [9] - The number of shareholders for China First Heavy Industries has remained relatively stable between 230,000 and 250,000, indicating a lack of significant new investment [3] - China Power Construction has a price-to-earnings ratio of 6.9, similar to some bank stocks, and its net asset value has decreased by 43% [7]