2家半导体公司宣布涨价，涉及多款芯片产品

Group 1 - The core viewpoint of the articles is that both Guokewai and Zhongwei Semiconductor have announced price increases for certain chip products due to supply chain pressures and rising costs [1][3] - Zhongwei Semiconductor has issued a price adjustment notice stating that the price of MCU and Nor flash products will increase by 15% to 50% starting immediately [1] - Guokewai has informed customers of significant price hikes for KGD products, with increases of 40% for 512Mb, 60% for 1Gb, and 80% for 2Gb products, effective from January [3] Group 2 - The semiconductor industry is experiencing a tightening supply situation, leading to longer delivery cycles and increased costs for packaging and testing [1] - The stock market reflects positive sentiment in the semiconductor sector, with Guokewai and Zhongwei Semiconductor shares rising by 5.91% and 6.35% respectively [3] - Guokewai has indicated that it will adjust prices for the second quarter based on the price increases of KGD products in that period, with specific strategies to be announced later [3]