Shandong Liangdi Energy Saving Technology Co., Ltd. is located in Changqing Industrial Park in the southern suburb of Jinan, a city with beautiful scenery. It specialises in the research and development, design, production and service of cooling distribution units (CDU), water distribution manifold, data centre cold storage tanks, heat exchanger units, water supply units and other products required by data centres.

Shandong Diwang Aluminum Technology Co., Ltd. was established in 2002. It is an enterprise integrating independent design, research and development, production and comprehensive sales. Its business areas include: aluminum coils,galvanizing, color coating, etc. The company's main products are galvanized series: galvanized sheets, galvanized coils, galvanized rods, galvanized roofing; aluminum series: aluminum sheets, aluminum rods, aluminum foil, aluminum tubes, aluminum coils, aluminum alloys, and aluminum profiles. The company currently has more than 300 employees and 5 domestically advanced aluminum coil production lines with an annual output of 900,000 tons.