<p>➀ Samsung Electronics is reducing production of DDR4 memory and scaling back its HBM2E business to focus on HBM3E and HBM4 products.</p><p>➁ Analysts believe this move is a response to the rise of Chinese firms in mature-process memory, forcing Samsung to retreat from segments with intense low-cost competition.</p><p>➂ Samsung is aiming to pass Nvidia's HBM3E certification to boost production and gain early leadership in the emerging HBM4 market.</p>