I am writing a letter of appreciation to many of my contractor on behalf of my organization. i would be really thankful to you if you can provide me assistance in improving grammar and quality of letter.
sample i wrote
"We extremely appreciate our association with your organization. It is very immense pleasure for us writing your organization this appreciation letter. First of all we would like to congratulate for completing all given projects accordingly within time frame with Quality and Safety. All technical staff deployed by your organization was highly experienced, efficient and motivated in their sector of work"
Please kindly provide more matter to add in this letter.