To carry out overseas business projects, it is necessary to investigate the political, economic, cultural, legal, tax, religious and other core issues of the host country, especially the target industry and the actual situation of the target company in the country, and assess and prevent possible transaction risks.In addition to the regular overseas investment and trade fields, special enterprises such as listed companies also need to comply with the requirements of the regulatory authorities, entrust legal institutions to conduct due diligence on the overseas companies held by the listed company in the links such as private placement and public issuance of convertible bonds and issue Legal opinion.