Founded in 2011, Dou Huangjin Food Co., Ltd. has been dedicated to producing green, 0-additive dried tofu for over a decade. The company integrates soybean cultivation, production, R&D, sales, and industrial tourism into an innovative business model. With an investment of 50 million RMB, the company established a Chinese Academy of Engineering Academician Workstation and appointed Academician Gai Junyi as the R&D advisor to enhance production techniques. After years of technological breakthroughs at the workstation, Dou Huangjin successfully solved a major challenge in the food industry—the purine-free technology. Having established itself for 13 years, Dou Huangjin’s core products include 0-additive fresh dried tofu, tofu puff, frozen tofu, vegetarian beef tendon, crispy rolls, and pressed tofu, with products categorized into hot pot series and Chinese cuisine series to meet various customer needs. The company has formed partnerships with 93 of China’s top 100 restaurant chains and is ranked among the leading manufacturers of soy products in China.

Jinyan’er operates two major processing bases—Chengxi Industrial Park and Daqiao Industrial Park—in Gutian County, spanning a total area of 80 mu (approx. 53,000 m²), with 70,000 square meters of standardized factory space. Utilizing standardized processing procedures and innovative techniques, the company has an annual production capacity of 500 tons of dried tremella (white fungus). The company also manages 60 high-altitude organic tremella cultivation bases and partners with over 1,000 mushroom greenhouses, covering around 100 mu (approx. 66,000 m²). These bases use wild mushroom strains and nutritionally balanced substrates, yielding 10,000 tons of fresh tremella annually.

Shandong Province ranks as the top region in China in terms of primary industry value added and gross output of agriculture, forestry, animal husbandry, and fishery. In more detailed breakdowns, the province ranks second nationally in total agricultural and animal husbandry output, twelfth in forestry, and fourth in fishery output. In crop farming, Shandong consistently ranks third in both grain cultivation area and output, with grain output exceeding 55 million tons for two consecutive years. Cotton planting area and output are both among the top five nationally, showing a modest rebound in 2022 after four consecutive years of decline (2018–2021). The province ranks seventh in oil crop planting area and fourth in oil crop output, although recent years have seen a gradual decline in both metrics. Shandong’s vegetable cultivation area consistently ranks among the top five, and output has shown continuous growth, maintaining the number one position nationwide. In fruit production, Shandong’s orchard area ranks among the top ten, and fruit output consistently ranks top two, with annual production exceeding 30 million tons for the past two years. In animal husbandry, Shandong has led the nation in total meat production for three consecutive years (2020–2022). It has held the top position in poultry egg production for 12 consecutive years, though output declined in both 2021 and 2022. Milk production has increased for five consecutive years and ranks fourth nationally, with current output exceeding 3 million tons. As a major fisheries province, Shandong is rich in aquatic resources. It ranks second nationally in both total aquatic product output and marine product output, and tenth in freshwater product output. Marine products consistently account for over 80% of the total aquatic output, and thus trends in total output closely follow those of marine products. In 2022, Shandong's total aquatic product output (excluding distant-water fishing) reached 8.439 million tons, including 7.249 million tons of marine products and 1.19 million tons of freshwater products.

This company is one of Guangzhou’s first high-end prepared food enterprises integrating R&D, production, and sales. It has obtained HACCP and ISO 22000 food safety management system certifications. Recognized as a Leading Agricultural Enterprise in Guangzhou and a Guangdong Province Contract-Honoring and Credit-Reliable Enterprise, the company collaborates closely with multiple universities and research institutes. In partnership with South China Agricultural University, it has jointly established a Practice Teaching Base and a Joint Innovation Laboratory. The factory is equipped with Class 100,000 cleanrooms and operates under a strict 5S management system, ensuring rigorous control over every stage of the production process to deliver high-quality prepared dishes to customers.

Xi Er Jia is a food production and business operation company that integrates research and development, production, sales, and brand promotion. In recent years, the company has focused on its "sugar-free, low-carb, and snack" series of products.