Shenzhen Hongcai New Material Technology Co., Ltd.

Shenzhen Hongcai and Jiaxing Cailian New Materials Co., Ltd. are both wholly-owned subsidiaries of Rainbow Refining (stock code: 002256), a company listed on the Shenzhen Stock Exchange. Their main business is green, low-carbon and environmentally friendly bio-based green plastics and fully biodegradable plastic modified materials and their products; Shenzhen Hongcai Company is located in Hong Kong, China's Pearl River Delta, close to the core financial and commercial area in Asia. Hong'ao High-tech Industrial Park, Guangming New District, Shenzhen, and Jiaxing Cailian Company are located in the Jiashan Economic and Technological Development Zone in Shanghai, Zhejiang, in the Yangtze River Delta of China, close to the international financial and commercial core city. The two companies have successfully developed special modified resins for injection molding, blister molding, film blowing and foaming products derived from the fields of bio-based green plastics and fully biodegradable plastics with independent innovative technologies. At present, a demonstration production line with 20,000 tons of products and 10,000 tons of special modified resin has been formed; its main raw materials come from renewable resources such as non-staple food potato starch, sugarcane bagasse, and straw fiber. Through the company's unique formula process, proprietary hot-cold high-speed mixing, multi-material materials are melted and sheared in the screw through the in-situ grafting reaction path of organic monomers, and the prepared materials are obtained under the dehydration of continuous condensation high vacuum equipment. The production process is closed and continuous, and no "three wastes" pollutant gases are produced. Because its material has good compatibility, mechanical properties, weather resistance and low cost, it can pass the health and safety certification of the US FDA and EU EC. The company's products are used in disposable food packaging containers, catering tools, agricultural planting, medical equipment, and industrial electronic packaging in many countries such as the United States, Europe, Japan, and South Korea.