归类化验工作的科学严谨是海关正确执行国家关税政策、保证统计数据准确、审价合理规范、监管服务到位的基础。海关化验作为商品归类的技术保证和有力支持,在严密监管、打击走私商业瞒骗中发挥着重要作用。由于归类化验技术操作需要一定时间,对送检化验、报送归类问答的货物必然在通关速度和贸易效率上有所影响。申报缺陷、疑难归类、送检化验、服务效率已成为影响通关速度的四大瓶颈。 The rigorous scientific classification of laboratory work is the basis for the Customs to correctly implement the national tariff policy, ensure the accurate statistical data, conduct reasonable price trial and regulate the service in place. As a technical guarantee and strong support for the classification of commodities, customs tests play an important role in closely monitoring and cracking down on smuggling and commercial fraud. Due to the classification of laboratory technology operation takes some time, the delivery inspection, submission of classified quiz goods will inevitably have an impact on the speed of customs clearance and trade efficiency. Declared defects, troubleshooting, inspection and testing, service efficiency has become the four bottlenecks affecting the speed of customs clearance.