章源钨业6天4板！章源钨业9:45再度涨停，背后逻辑揭晓

Group 1 - The core viewpoint of the article highlights the recent active performance of Zhangyuan Tungsten Industry, which has achieved a six-day streak of four consecutive trading limits [1] - The stock reached a trading limit at 9:45 AM with a transaction amount of 1.572 billion yuan and a turnover rate of 3.63% [1] - The increase in tungsten raw material prices has led to a rise in production costs for the company, prompting a price adjustment for its welding machine blade products [1] Group 2 - The non-ferrous tungsten sector has recently attracted market attention, resulting in active performance of related stocks [1]