Many Thanks for your reply
We would like the cooperation of your good service team for service job
To purpose in reference of billing with our customer next.
Please find attached file "The Service Report" and kindly fill in required fields
Between work in process and the end with signature approved by customer after job completed.
After that please attach with your invoice for billing to us.
We apologize for the inconvenience to you
Thank you very much for your cooperation and support
Best Regards,