Core Viewpoint - The article highlights the participation of three innovative companies from Hebei at the China International Supply Chain Promotion Expo, showcasing their advancements in clean energy technologies and materials, particularly in green hydrogen production, basalt fiber, and synthetic diamonds [3][4][5]. Group 1: Clean Energy Innovations - "Sunlight to Green Hydrogen" is a technology developed by Chengfeng Hydrogen Energy Intelligent Equipment (Hebei) Co., which connects photovoltaic panels to hydrogen production units, enabling hydrogen generation using solar energy [4]. - The company has overcome challenges related to the volatility of photovoltaic power generation, achieving a low-cost, low-energy, and zero-emission hydrogen production solution [4]. - The other participating companies, Hebei Toshi Crystal Armor Technology Co. and Zhongxian New Materials Technology (Chengde) Co., are also startups established after 2022, contributing unique technologies to the clean energy sector [4]. Group 2: Basalt Fiber Technology - Zhongxian New Materials showcased a process that transforms basalt rock into high-value fibers, significantly increasing its market price from tens of yuan per ton to over 400,000 yuan per ton for processed basalt flakes [5]. - The basalt fiber composite rebar is lighter than traditional steel rebar, weighing only a quarter while offering higher strength and better corrosion resistance [6]. - The company utilizes local green electricity resources to produce basalt fibers with no waste emissions during the process, positioning itself as an environmentally friendly alternative in construction materials [5][6]. Group 3: Synthetic Diamonds - Hebei Toshi Crystal Armor Technology Co. produces synthetic diamonds using green electricity, significantly reducing production time to 600 hours compared to natural diamonds [6]. - The company has developed high-end equipment for diamond production, achieving a 35% to 40% reduction in production costs while maintaining a purity level of 99.999% [7]. - The participation in the expo has led to potential collaborations with major companies and research institutions, enhancing the company's visibility and opportunities in the market [7].