The reason for the rise of PC materials The current trend of PC materials is the reason for the rise of PC materials. Reason 1: According to foreign media reports, the pharmaceutical company Pfizer stated that preliminary results show that its new crown vaccine is more than 90% effective and can prevent new crowns. Reason 2: The U.S. election basically ended, and the three major U.S. stock indexes opened higher under the double impact. Reason 3: International oil prices continue to expand. Outlook forecast: The current pc market has risen sharply, and it is expected that the pc market may continue to rise in the near future.