解除铜的出口限制，执行暂定税率。随着有色金属工业的发展，我国已结束了过去铜供不应求的局面。禁止铜出口，是在我国铜供应短缺时期制定的政策。最近国家有关部门正在研究解除铜的出口限制，允许铜一般贸易出口。同时，为鼓励铜的出口，降低出口成本，国家有关部门正在研 Release copper export restrictions, the implementation of the provisional tax rate. With the development of the non-ferrous metal industry, China has ended the situation of the copper shortage in the past. Banning the export of copper is a policy formulated in the period of short supply of copper in our country. Recently, the relevant state departments are studying the lifting of the copper export restrictions, allowing the general trade of copper exports. At the same time, in order to encourage the export of copper and reduce the export cost, the relevant state departments are studying