Project A involves inserting 3 kinds of parts (A, B, C) totaling 4 parts. Parts A and B are packed in tubes, while part C is glued to a tray. The work area should be within 200mm x 200mm. Project B involves inserting 2 kinds of parts (D, E) totaling 3 parts. Parts D and E are packed in tubes and plastic plates, respectively, within a 200mm x 200mm area. Project C involves inserting a single large RJ45 part using a large claw. It is packed on a rubber plate and packaging depends on the goods.