Group 1 - The company, Naipu Mining Machinery (耐普矿机), reported that the first set of high-alloy composite liners for the 7.5-meter semi-autogenous mill at the Tibet Zhibula mine has been in use for nearly eight months, significantly improving the lifespan compared to the previous metal liners, which is nearly double [1] - The company has already installed the second set of liners, indicating a successful transition to the new product [1] - The quantity of liners required varies by mill model, with larger models needing more liners due to differences in diameter and length [1] Group 2 - The high-alloy composite liners are currently in a promotional trial period, suggesting potential for significant price adjustments in the future [1]