In March 2022, a batch of Dingzhun high temperature test chambers, high and low temperature alternating humidity test chambers, and mechanical testing equipment will be delivered to Beijing Shitou Century Technology Co., Ltd. We would like to express our gratitude to our loyal customers for their trust and support over the years. Dingzhun will continue to provide high-quality testing equipment and excellent after-sales service to help our customers achieve faster and better sustainable development.

Stone Technology (stock code 688169) was established in Beijing in July 2014. It is a company dedicated to the research and production of intelligent cleaning robots and other smart appliances. Nowadays, Stone has grown into a global company with products in over 100 countries and regions around the world. It was listed on the Shanghai Stock Exchange's Science and Technology Innovation Board in February 2020. In the future, Stone will continue to explore cutting-edge technologies to improve human life and is committed to simplifying life through innovation.