Dear ,
I’m very sorry for not having replied to your July 6th letter sooner. When your letter arrived, I was in Beijing. As my secretary couldn’t forward it to me, it has been lying on my desk until I got back.
Thank you for all your news. It is good to know that your company has agreed to sign the contract to continue the cooperation with us. And we surely will have a bigger success in the near future.
Look forward to catching up and once again apologize for the delay.
Sincerely,