1. TSMC's 3nm process faces yield and cost challenges amid production scaling; 2. Apple's M4 chip adopts TSMC's 3nm technology but struggles with high costs and limited capacity; 3. Intel's 18A process advances rapidly, posing competitive pressure on TSMC in advanced node manufacturing.

1. TSMC secures all Apple's 3nm chip orders, consolidating its leadership in advanced semiconductor manufacturing; 2. Samsung faces challenges in competing with TSMC due to lower yields and technical limitations in its 3nm process; 3. The development highlights TSMC's dominance in cutting-edge chip production and Apple's reliance on its manufacturing capabilities.