Jiusan Oil & Fat Co., Ltd., an expert in soybean processing, produces various animal feed products made from soybeans that retain their protein content and are highly digestible. However, they face challenges in pricing their soybean products due to market fluctuations. Additionally, some wholesalers engage in unethical practices, such as transregional sales, where they resell products from unspecified suppliers to nearby wholesalers or discharge sites to increase their profits. Jiusan Oil & Fat Co., Ltd. is seeking an efficient method to monitor these activities and take appropriate countermeasures.