Research on legal issues of share transaction of non-listed companies 并列题名：Research on legal issues of share transaction of non-listed companies Research on legal issues of cross-border transaction of digital currency Research on the issues of earning preannouncement in Chinese listed companies 并列题名：Research on legal issues of cross-border transaction of digital currency Research on the tax issue of transfer pricing of foreign-funded companies Research on legal issues of trade secrets and non-competition Research on the transparency of segment info rmation in China's listed companies 并列题名：Research on the issues of earning preannouncement in Chinese listed companies Research on information transparency of listed companies