They are often implemented in a non-transparent manner, with little consultation, and add to the cost of importing. For example, every shipment of fresh food of plant origin must be tested for chemical content in Indonesia before being released; imports of chicken leg quarters from the USA are still banned for halal reasons since trade was halted in 2000; importers of animal products require import approval for shipments; and ports of entry are being reduced in number. This is done to ensure an adequate supply of these products on the domestic market. Exports of coffee, rubber, manioc (to the EU) and bananas and pineapple (to Japan) are controlled to meet international obligations or to maximise returns from the market.