超硬材料指数盘中拉升，国机精工涨停

Core Viewpoint - The superhard materials index experienced a 2.01% increase during intraday trading, with most constituent stocks rising significantly [1] Company Performance - Guojijinggong reached the daily limit increase [1] - Huifeng Diamond rose by 8.29% [1] - World increased by 3.41% [1] - Sifangda saw a rise of 2.76% [1] - San Chao New Materials grew by 2.44% [1]