YINGYUAN INTERNATIONAL LOGISTICS CO operates as a supplier/exporter specializing in polymer materials, particularly polyethylene pellets (45 shipments) and HDPE (32 shipments). Handling 183 shipments (12.7M kg, 37.5 TEU) from Jan 2023-May 2024, it demonstrates steady monthly trade with core partners XIAMEN C&D INDUSTRIAL (19 shipments) and ZHEJIANG MATERIALS INDUSTRY. Buyers should note consistent outbound volumes through Shanghai (65 shipments) and Qingdao (41 shipments), with US/Seoul-bound cargo showing market expansion. Customs brokers will observe standardized HS code usage (390120:54x, 390210:39x) and predictable China-US/Korea routes (Los Angeles:38x, Busan:29x), though 12% weight discrepancies in HDPE shipments warrant documentation verification. The port pair concentration and 23% shipment growth over 17 months signal processing efficiency for brokers and scalable sourcing capacity for buyers in plastics manufacturing.