A staff member checks on boxed tofu products for distribution logistics at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea, Nov. 3, 2020. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

Photo taken on Nov. 3, 2020 shows tofu products on the assembly line at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

A staff member works at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea, Nov. 3, 2020. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

Staff members work at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea, Nov. 3, 2020. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

Photo taken on Nov. 3, 2020 shows boxed tofu products on the assembly line at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

Photo taken on Nov. 3, 2020 shows tofu being cut into cubes on the assembly line at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

A staff member introduces the manufacturing procedures at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea, Nov. 3, 2020. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

Photo taken on Nov. 3, 2020 shows boxed tofu products on the assembly line at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

A staff member works at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea, Nov. 3, 2020. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

Photo taken on Nov. 3, 2020 shows boxed tofu products on the assembly line at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

Photo taken on Nov. 3, 2020 shows boxed tofu products on the assembly line at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

A staff member checks on raw beans at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea, Nov. 3, 2020. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

Photo taken on Nov. 3, 2020 shows boxed tofu products on the assembly line at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

Photo taken on Nov. 3, 2020 shows boxed tofu products on the assembly line at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

Staff members work at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea, Nov. 3, 2020. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)

Photo taken on Nov. 3, 2020 shows trucks at a tofu plant of Pulmuone in Eumseong-gun of Chungcheongbuk-do, South Korea. Pulmuone, a leading food company in South Korea, will be an exhibitor at the third China International Import Expo (CIIE), which will take place from Nov. 5 to 10 in Shanghai. (Xinhua/Wang Jingqiang)