It produces quick-frozen food. Zhengzhou Sinian Food Factory is one of China's quick-frozen food manufacturers. It was established in 1997 and listed in Singapore in 2006. Si Nian Company is located in the Huiji District Industrial Park, covering an area of ??nearly 1,000 acres. It mainly produces quick-frozen dumplings, glutinous rice balls, noodles, and rice dumplings. The working environment is a constant temperature (25°C) all year round, which is warm in winter and cool in summer, and is clean and hygienic.