3.Assignments of Plant Quarantine 1)Carry out quarantine and inspection to imports and exports of plants and plant products internationally and regionally.Prevent pests from spreading. 2)Make clear distribution of,injury caused by and required conditions for quarantine pests to survive. Make clear where the quarantine pests are supposed to be and where they are not supposed to be. 3)Set up pest-free seed and seedling bases for quarantine.3. Assignments of Plant Quarantine 1) Carry out quarantine and inspection to imports and exports of plants and plant products internationally and regionally. Prevent pests from spreading. 2) Make clear distribution of, injury caused by and required conditions for quarantine pests to survive. Make clear where the quarantine pests are supposed to be and where they are not supposed to be. 3) Set up pest-free seed and seedling bases for quarantine