On June 24, 2019, Cai Xiaohong, Vice President of Guangxi Yuchai Co., Ltd. (hereinafter referred to as Yuchai), and Lan Renyi, Deputy Minister of Procurement, visited and guided the work of Zhongzi Environmental Protection Technology Co., Ltd. (hereinafter referred to as Zhongzi Environmental Protection), the main supplier of Yuchai Guoliu and T4 emission post-treatment products. Chen Qizhang, Chairman of Zhongzi Environmental Protection, and Li Yun, General Manager, along with the senior management team, warmly welcomed the visit of General Manager Cai and his delegation.

         During the inspection, Mr. Cai and his delegation carefully visited the R&D building, laboratory, production workshop, exhibition hall and other places of Zhongzi Environmental Protection. I have gained a detailed understanding of Zhongzi's product development capabilities, testing capabilities, production capabilities, business operations, and development plans. Chen Qizhang, Chairman of Zhongzi Environmental Protection, and Li Yun, General Manager, provided a detailed introduction to the company's basic situation, as well as the research and production preparation of National VI and T4 products, to Mr. Cai and his delegation. Assistant General Manager Wang Yun and R&D Department Director Liu Zhimin gave a detailed introduction to advanced catalyst technologies. Mr. Cai fully affirmed the leading position of Zhongzi Environmental Protection's catalyst technology in the industry, and highly praised the product consistency. He put forward detailed requirements and provided good suggestions and opinions for the next step of product development cooperation between the two parties.

          Zhongzi Environmental Protection is a technology company specializing in researching post-treatment emission technology. The company's catalyst technology has an advanced and complete production and research and development system. The technology level of China VI natural gas catalysts is currently at an advanced level globally, and diesel engine SCR iron-based, copper based, and alum based catalysts are at the forefront in China. As an important strategic customer of Zhongzi, Yuchai and Zhongzi have many years of successful cooperation experience. Chairman Chen Qizhang stated that with Yuchai's full support and assistance, Zhongzi will continue to make unremitting efforts to strive for better products, provide high-quality products and services to Yuchai, and create greater value for customers.