The State Property Fund of Ukraine (SPF) has started preparing for tender to sell 20 large enterprises, including 68% of shares in public joint-stock company Zaporizhia Aluminum Combine (ZAlK), 99.567% in Odesa Port-Side Plant, 99.995% in PJSC Sumykhimprom and five regional electricity supply companies, acting SPF Head Vitaliy Trubarov has said.