export of grain products more stable compared to industrial goods.Causes, firstly, is due to national political factors. Each country must guarantee food security, if real wages are not guaranteed a huge influence to national politics. So the buốn sold primarily to be signed between the main phủvới each other through the agreement, the contract principles, long-term and specific weight every year at the beginning of the youth service.
đang được dịch, vui lòng đợi..
