Shenzhen Huakong Seg Co., Ltd. Shenzhen Huakong Seg Co., Ltd. (000068.SZ) engages primarily in the public utility environmental protection engineering sector in China, offering sponge city construction; water engineering projects; smart water construction and operations; engineering consulting and design services; water pollution prevention and control planning; graphite and new materials; smart water integrated solutions; architectural planning and design; systematic environmental comprehensive management; engineering construction; information system integration; and big data services. The company, founded in 1989 and headquartered in Shenzhen, operates mainly in the domestic market with a focus on energy saving, environmental protection, and new materials industries, targeting municipal and urban water system clients. Recent developments include an agreement in January 2025 to acquire a 40% stake in Shanxi Construction Investment Yunshuzhi Technology Co., Ltd. for strategic expansion in construction technology, alongside a September 2025 plan by major shareholder Shenzhen SEG to reduce its holdings by up to 3%.