Group 1 - The core idea of the article highlights the transformation of solid waste from coal-fired power plants into valuable materials through innovative companies in the Puding Economic Development Zone [1][2] - Guizhou Zhihui Kake Environmental Technology Co., Ltd. processes desulfurization gypsum into fine spray gypsum products, with a production capacity of 60 tons per hour and an annual consumption exceeding 40,000 tons [1] - The company aims to achieve a production value of 45 million yuan by 2025 and has secured a project order worth 30 million yuan in early 2026 [1] Group 2 - Guizhou Shengyan New Building Materials Co., Ltd. produces autoclaved bricks primarily from fly ash, which are one-third the weight of traditional clay bricks and offer good sound and thermal insulation properties [1] - The Puding Economic Development Zone has developed a cluster of 11 enterprises focused on comprehensive utilization of solid waste, capable of processing 1.03 million tons of desulfurization gypsum and 370,000 tons of fly ash annually [2]