Entering WTO witnesses the flourishing export and import business of China. With the gradual tariff reduction required by WTO system, other forms of trade barriers began to show up. Many countries make excuses of environmental protection to establish high walls to international trade. The new protectionism is harder to discern and could engender more losses of China's economy. As China rapidly expands its business in international market, being equipped with enough knowledge to avoid and even refute such ne...