Core Points - The company, Datang International Power Generation Co., Ltd. (00991.HK), has completed the issuance of its fourth phase of technology innovation perpetual corporate bonds aimed at professional investors, totaling RMB 2.5 billion [1] - The bonds have a base term of 5 years, with the option for the company to extend the term by an additional 5 years at the end of each cycle [1] - The coupon rate for the bonds is set at 2.19% [1]