The 25Kw Dish Stirling Solar Thermal power generation system developed by Tonking has a photoelectric conversion rate up to 32%. After two years of R&D, Tonking has made a breakthrough on the bottleneck of Stirling engines which previously have been dependent on imported ultra-high temperature metallic materials and core components. Furthermore, Tonking is the first company in China that can manufacture Stirling Engines by using its own proprietary technology. The group has applied for more than 40 patents on solar thermal field.

In 2013, the group signed a 10-year exclusive agreement with Zhejiang University to lower the manufacturing cost by innovation and promote industrialization process.