TARIC 8419.50.80.20 — Pre-assembled process module unit of an ethane cracker unit, containing:  -an open loop ethylene refrigeration system, which is to be integrated with an external ethylene refrigerant compressor, -pumps and a heat exchanger to deliver ethylene to an external pipeline, and -a closed loop propylene refrigeration system, which is to be integrated with an external propylene refrigerant compressor | TariffCodex