comment my request letter

Referring to numerous conducted joint site inspection with client, Architect, consultant and relevant parties, the inspection resulted in our requirement to relocate indoor units in the mock-up flats at each tower more times as requested by client. Since the maintenance of whole indoor unit require the full size of access panel and have informed to client during the site inspection. Up to now, the exact location of access panel cannot be provided in connection with the location of indoor units are still pending for approval.

At the meantime, we would like to seek an approval to the location of indoor units in order to settle the assess panel location for future repairs.

Would you mind giving me comment on grammar and language to become a formal letter?