Urbaser SA (Platinum Equity Capital 100%+ controlled post-2021 USD 4 billion take-private from Chinese state-affiliated Tianying Inc) has faced sustained class actions over the contested 2021 USD 4 billion Platinum Equity Capital Urbaser take-private (Platinum Equity acquired Urbaser from Chinese state-affiliated Tianying Inc 2021 USD 4 billion) affecting institutional minority shareholders amid European waste management sector consolidation pressure.