bonded goods

基本解释

Yes. But there is one thing I don't understand. Why some goods are bonded goods, while others are duty-free goods?
乔治：是的。但我有一点不明白，为什么么有的是保税货物，而有些是免税货物呢?。
Bonded goods are mainly for goods need out of temporary entry, or the import goods customs approval suspend taxes.
保税货物主要是暂时进境后还需要复运出境的货物，或者海关批准暂缓纳税的进口货物。
To be responsible for custom clearance, goods receiving, stocking, goods shipment, bonded goods, inventory, logistics and delivery.
负责生产材料通关、进货、入库、产品发货、保税品、库存、物流、运输管理；

Moreover, there appears to be another stratagem that exporters extensively used in December, the round-tripping of goods through special trade areas and bonded warehouses to earn substantial value-added-tax rebates.
FORBES: China's Market-Moving Trade Data Is Inaccurate