3925100000 under HS Code BUILDERS WARE OF PLASTICS, NOT ELSEWHERE SPECIFIED OR INCLUDED - RESERVOIRS, TANKS, VATS AND SIMILAR CONTAINERS, OF A CAPACITY EXCEEDING 300 L, 3917400009 under HS Code TUBES, PIPES AND HOSES, AND FITTINGS THEREFOR (FOR EXAMPLE, JOINTS, ELBOWS, FLANGES), OF PLASTICS - FITTINGS, and 3921906000 under HS Code Others were the top imported HS Codes by FLEXOL LLC in 2021.