求翻译：1997年，欧盟为加强对进口肠衣的质量控制，对肠衣出口企业实施申请注册制，只有获准注册的公司才能直接向欧盟国家出口肠衣产品。是什么意思？

In 1997, the European Union to strengthen the quality control of imported casings, casings export enterprises to apply for the registration system, and only allowed to companies registered to export casings products directly to the EU countries.

In 1997, the European Union to strengthen the quality of the imported casings for sausage casings, export businesses to implement an application for registration, only to be allowed to register the company exports directly to the European Union (EU) country sausage casings.

In 1997, European Union for strengthened to imports the sausage casing the quality control, implemented the application registration system to the sausage casing exportation enterprise, only then was allowed the company which registered to be able directly to the European Union country to export the

In 1997, the EU is to strengthen quality control of imported sausage casings, sausage casings-export enterprises applying for registration, only registered companies can directly sausage products for export to EU countries.

正在翻译，请等待...