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Under the circumstance of global economic integration, the hassles困難；爭(zhēng)論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；不干預(yù)經(jīng)濟(jì)or not, whether to liberalize放寬對(duì)..限制the trade barrier貿(mào)易壁壘or not, whether to raise tariffs關(guān)稅or not, whether to deregulate解除管制the multinational corporations… these all remain to be solved.

And infant industries新興產(chǎn)業(yè) are rising up. They want to be beneficiary受惠人to gain subsidy補(bǔ)助from government.

Since the mainstream of transnational trade is irrevocable不可撤銷的, letter of credit信用證is necessary.