In January 2015, Prince and Hangzhou Kaimen Electromechanical Co., Ltd. signed four A10N200S-40 air valves for use in the Turkish KOZBUKU hydropower station.

Four air valves were successfully completed and delivered in late April. Hangzhou Kaimen Electromechanical Co., Ltd. and Prince Co., Ltd. have cooperated many times on hydropower station related valves. Many of the projects are foreign hydropower stations, which have high technical and quality requirements. However, the overall manufacturing and assembly level of Prince has always been adhering to the tenet of "surpassing customer expectations, quality achieving the future", and completing each project with international standards and standards. After the product testing, it fully meets and exceeds the requirements of customers. There are cooperation with many foreign projects. With further improvements in quality standards and manufacturing levels, Prince will win more foreign orders.