Write a letter to the customer informing about the change of address.

Dear Sir,

This is to inform you that with your kind cooperation and patronage our business has made rapid progress and has increased immensely. As a result, our present premises are proving to be too small as some of the orders go unexecuted and others get delayed in execution.

Taking into consideration these factors, we are shifting our business to the new premises at 415, Middle Complex Shopping Centre Hong Kong, with effect from (Date). We are confident that in future also we shall be able to serve you punctually and to the best of our ability. We hope to continue to benefit from your kind cooperation.

Thanking you

Yours faithfully