HBM 4，生变

Group 1 - SK Hynix is expected to start procurement for the next-generation HBM4 12-layer stacked equipment by the end of this month, although the investment review meeting has been postponed to late November to early December [2] - The company has completed a supply agreement with NVIDIA for HBM4, resolving previous uncertainties regarding pricing and technical specifications [2] - SK Hynix is currently producing HBM4 using modified HBM3E 12-layer equipment, which has led to longer lead times and reduced responsiveness [2][3] Group 2 - SK Hynix has established a small-scale production system for HBM4 and is in a transitional production phase [3] - The new M15X factory in Cheongju is under construction, with the first cleanroom operational, but the equipment installed is primarily for infrastructure rather than HBM4 production [3] - Samsung Electronics is also accelerating its HBM4 production preparations and is expected to start stable shipments next year, competing with SK Hynix for HBM4 production progress and quality [3]