Thank you very much for your early reply.At the same time, I'm sorry to tell you that cause the current situation, and we're not allowed to carry on this training visit.So we decided to cancel the training this time.

　　thank you fou your response ,but I am sorry to tell you we decide to cancle the training for some reasons in company (objective fact or objective causes). I hope we will have chances to cooperate in the future .we really appreciate the help and support that you have given us during these days. Let’s keep in touch with each other.

　　Gratitude to your reply. I am notifying you with regret, that we are not able to participate into the training in accordance to the reality of our firm. However,sincerely we appreciate some co-operation in the foreseeable future, and thank you for your esteemed support alone the visit then. Please keep in contact if necessary.