2. Processing technology of rice: cleaning of raw grain, separation of mixture of brown rice and coarse rice, separation of immature grains in brown rice, rice milling, white rice grading, color selection, polishing, white rice grading and packaging.

3. Rice is a finished product made of rice by washing, hulling, milling and finishing. Rice embryo and aleurone layer contain nearly 64% of rice nutrition and more than 90% of nutrients needed by human body, which are the main foods of southerners.