【原】Trade

Under the circumstance of global economic integration, the hassles困难；争论among the countries arise.

Whether to comply with遵守the politics of Commercial Union or not, whether adopt the laisser-faire自由放任；不干预经济or not, whether to liberalize放宽对..限制the trade barrier贸易壁垒or not, whether to raise tariffs关税or not, whether to deregulate解除管制the multinational corporations… these all remain to be solved.

And infant industries新兴产业 are rising up. They want to be beneficiary受惠人to gain subsidy补助from government.

Since the mainstream of transnational trade is irrevocable不可撤销的, letter of credit信用证is necessary.