川恒股份：天一矿业的老虎洞磷矿正在按500万吨/年的产能进行建设

Group 1 - The core point of the article is that Chuanheng Co., Ltd. has confirmed the ongoing construction of the Tiger Cave phosphate mine by Tianyi Mining, which is expected to reach an annual capacity of 5 million tons [1] - Chuanheng's subsidiary holds a 49% stake in Tianyi Mining, indicating a significant investment in the phosphate mining sector [1] - Tianyi Mining anticipates that there will be some mineral output from the Tiger Cave mine this year, despite the ongoing construction [1]