It’s Japan!
China’s rice paper manufacturing technology is unique, but in the early days, I can’t remember the specific time, it seems that it was 60 or 70 years ago, Japanese paper industry experts came to China to visit Chinese paper factories. At that time, China was in a complete vacuum regarding patents. The Japanese experts introduced the manufacturing process of rice paper in detail and visited the finishing production process. The Japanese made detailed records. After returning to China, they relied on the advantages of Japan's manufacturing industry (mechanical modernization, automation, management level, etc.) to quickly standardize and automate the production process of rice paper, and applied for a patent. Until now, China imports a considerable amount of rice paper from Japan.