significance不可数,不能用a 应该to cooperate或in the cooperation of 改写后：It is a significant milestone for us and Daxin in the cooperation of the A+H listing business,the achievement of diversification and the expasion of our business in the mainland market.
significance不可数,不能用a 应该to cooperate或in the cooperation of 改写后：It is a significant milestone for us and Daxin in the cooperation of the A+H listing business,the achievement of diversification and the expasion of our business in the mainland market.