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在国际贸易中,技术壁垒是构成当今国际贸易中最难对付、最棘手的问题之一。如美国一些州和地方政府颁布法规和条令,规定某些产品必须贴有 UL 标志。它使出口国出口商品
In international trade, technical barriers constitute one of the most difficult and thorny issues in today’s international trade. For example, some states and local governments in the United States have issued regulations and regulations that require certain products to bear the UL mark. It allows exporting countries to export goods