JIAXING SINI FASTENER CO LTD operates as a specialized exporter of industrial fasteners (bolts, nuts, washers), demonstrating consistent shipment volumes averaging 10-15 monthly consignments primarily from Chinese ports Shanghai, Qingdao, and Pusan to major U.S. hubs like Los Angeles, Seattle, and Norfolk. Buyers should note sustained partnerships with key importers including CONNECTED COMPONENTS INC and F&F BEARING CO, reflecting reliable supply chain integration and a focus on standardized fastener products. The company exhibits scalable capacity with seasonal shipment spikes (e.g., 19 shipments in Nov 2022) and diversified product extensions like rods and specialized bolts. Customs brokers will observe predominant HS code 930610 usage for螺丝螺栓, though occasional inconsistencies (e.g., "930610.0" formatting variations) require verification for tariff alignment. Over 85% of cargo deploys from Shanghai/Qingdao with predictable routing, while 15% leverage transshipment via Pusan—necessary documentation should confirm Chinese origin declarations. Stable volume allocation to major U.S. West Coast ports supports streamlined clearance planning, though occasional East Coast diversions (Norfolk, Boston) necessitate advance CBP coordination. Suppliers benefit from ISO-compliant packaging practices and TEU utilization consistency (1.8-2.5 TEU/shipment), while brokers gain from minimized inspection risks via recurrent commodity declarations.