Section 11 Textiles and textiles articles 50 Silk 50 01 Silkworm cocoons suitable for reeling 50 01 00 Silkworm cocoons suitable for reeling. 50 01 00 00 Silkworm cocoons suitable for reeling. Commodity Code Description 50 01 00 00 000 Silkworm cocoons suitable for reeling.