HAPLAST JOINT STOCK COMPANY, a Vietnamese exporter of polyethylene bags and related plastic packaging, consistently ships 8‑22 containers per month from Haiphong (majority) and occasional Panama, Pusan and Chinese ports, targeting major US entry points such as Los Angeles, Long Beach, Oakland, Seattle and Tampa. Its core HS code 420299 (plastic bags) appears in 70%+ of shipments, supplemented by 392220 and 392321 for broader polymer products, indicating stable tariff classification. Top buyers include AMAL LLC, APSIC INC, POWERPACK LLC and PREMIUM BOTTLED WATERS, each receiving 1‑5 shipments per month, reflecting reliable demand across retail, industrial and beverage sectors. For buyers, HAPLAST offers a high‑volume, repeatable supply of standard‑size and custom‑spec plastic bags, with average shipment weight around 200‑250 t and TEU utilization near 20‑30 per month, signaling capacity for scale and consistent lead‑times. For customs brokers, the company’s predictable port‑of‑loading and unloading patterns, uniform HS‑code usage, and regular documentation cadence facilitate efficient clearance and risk assessment, while occasional multi‑port routes (e.g., Haiphong‑Panama‑US) suggest the need for vigilance on trans‑shipment compliance. Overall, HAPLAST’s steady export rhythm, well‑defined product codes, and entrenched US buyer base make it a dependable partner for procurement and a low‑risk entity for customs processing.