73071110 under HS Code TUBE OR PIPE FITTINGS (FOR EXAMPLE, COUPLINGS, ELBOWS, SLEEVES), OF IRON OR STEEL - CAST FITTINGS : OF NON-MALLEABLE CAST IRON : SPONGE IRON CAST FITTINGS, 83071000 under HS Code FLEXIBLE TUBING OF BASE METAL, WITH OR WITHOUT FITTINGS OF IRON OR STEEL, and 84195091 under HS Code Others were the top imported HS Codes by REE REFRIGERATION ENGINEERING & SERVICE JOINT STOCK COMPANY in 2021.