Dear Sir or Madam.
We checked your bid and we are interested to do the job. We are a team of coworkers with enough human resources to do the job. We added a a bid as for to be in contact to you and understand the work. We would like to be more specific on the work. We would like to know some more information on the work regarding the area of the place to be cleaned, is this going to be a continuous process ( like once a month/2months or just one time work. We would like to hear from to for some more information to see the idea.
Wish you the best
Sincerely
ATT