In the Weekly Review of the Electrolyzer Industry from May 30-June 5, 2025, the domestic alkaline electrolyzer market in China retained a capacity of 35.77GW with significant deliveries to key hydrogen projects. Huaguang Energy delivered a crucial alkaline electrolyzer to the China Energy Construction Songyuan Hydrogen Energy Industrial Park, while other companies like Central Power, Sany Hydrogen, and LONGi Hydrogen made notable deliveries to various locations including Australia. The article highlights policy developments driving green hydrogen capacity expansion across regions and national guidelines pushing for technological innovation in electrolyzers. Corporate updates reveal capacity expansion plans by leading manufacturers and strategic cooperation agreements within the industry. Moreover, technological advancements include a breakthrough in AEM electrolyzer technology, offering higher efficiency and faster response rates. There is also progress in key material performance, with a new catalyst material developed to reduce energy consumption during water electrolysis for hydrogen production. The overall sentiment of the article is positive towards the advancements and developments in the electrolyzer industry, showcasing a growing market and increasing focus on green hydrogen production.