Documents for PNG Vehicle Import: What Buyers Need Before Shipping from Japan The most important documents for vehicle import to Papua New Guinea are the Commercial Invoice, Japanese Export Certificate, Bill of Lading, buyer details, TIN, and customs declaration documents prepared with a licensed customs broker. However, buyers should not treat documents as a simple checklist. For Papua New Guinea(PNG)buyers, the correct documents depend on the vehicle type, buyer name, declared value, arrival port, shipping term, customs broker, and final use after clearance. A truck arriving at Lae Port for Highlands transport may need a different local plan from a ...