【中文版】

中国信保是一家政策性保险公司，成立于2001年，属于国有控股企业。其功能主要集中在两个方面：一是为国内外贸易和投资提供保险保障，以促进对外贸易和投资的发展；二是通过承保业务向国内外客户提供风险保障，为国家重点战略产业提供风险保障和支持。

首先，中国信保通过为国内外贸易和投资提供保险保障，促进了对外贸易和投资的发展。作为政策性保险公司，中国信保根据国家的政策和法规，针对出口贸易、海外投资、国际物流等领域提供全面的保险保障服务。这种保险保障可以帮助企业降低海外市场风险，提高贸易和投资的信心，从而促进我国对外贸易和投资的发展。

其次，中国信保通过承保业务向国内外客户提供风险保障，为国家重点战略产业提供风险保障和支持。中国信保在承保业务方面，主要针对国家重点战略产业和新兴产业提供全面的风险保障和支持。这种支持可以帮助企业降低运营风险，提高生产效率，从而推动国家重点战略产业的发展。

总之，中国信保作为政策性保险公司，其主要功能是为国内外贸易和投资提供保险保障，同时为国家重点战略产业提供风险保障和支持。这些功能的发挥，不仅有利于促进对外贸易和投资的发展，也有利于推动国家重点战略产业的发展。

【英文版】

China Export & Credit Insurance (Sinosure) is a policy insurance company established in 2001, which is owned by the state and controlled by the central government. Its main functions are focused on two aspects: firstly, to provide insurance protection for domestic and foreign trade and investment, so as to promote the development of foreign trade and investment; secondly, to provide risk protection and support for key strategic industries in the country through insurance business.

Firstly, Sinosure provides insurance protection for domestic and foreign trade and investment, which promotes the development of foreign trade and investment. As a policy insurance company, Sinosure provides comprehensive insurance protection services for export trade, overseas investment, international logistics and other fields according to national policies and regulations. This insurance protection can help companies reduce overseas market risks, increase confidence in trade and investment, so as to promote the development of China's foreign trade and investment.

Secondly, Sinosure provides risk protection and support for key strategic industries in the country through insurance business. Sinosure mainly provides comprehensive risk protection and support for key strategic industries and emerging industries in the country. This support can help companies reduce operational risks and improve production efficiency, so as to promote the development of key strategic industries in the country.

In summary, as a policy insurance company, Sinosure's main function is to provide insurance protection for domestic and foreign trade and investment, while providing risk protection and support for key strategic industries in the country. The exercise of these functions is not only beneficial to promote the development of foreign trade and investment but also to promote the development of key strategic industries in the country.