DONG A CHEMICAL CO (Exporter, polyethylene compounds/bags/plastics) maintains consistent US-focused trade operations via Busan/Kwangyang ports primarily to Long Beach and Los Angeles, with recurring partners HOOVER TRADE INC, US86 TRADE LLC, and WINPACK INC. Buyers benefit from stable monthly FCL shipments (average 2-3 consignments, 19,500-39,000 kg/month) showcasing expertise in HS 844120 (bags) and 392329 (plastics), with 85%+ shipments concentrated on established partners since 2021. Recent diversification into Australian routings indicates scalable logistics. Customs brokers observe 92% HS code consistency (primarily 844120/842330) with standardized documentation and primary US West Coast discharge ports (Long Beach/Los Angeles), enabling streamlined clearance processes. Declining reliance on single buyers (from 2019-2021 JJ POLY ENTERPRISE dominance to multi-client distribution post-2022) signals strategic partnership risk mitigation while maintaining 95% weight-based shipment accuracy. Growing TEU allocation to Savannah, GA (15% of 2025 volume) highlights infrastructure adaptability for Eastern US market expansion.