We are  regular suppliers of shipbuilding materials to local ship yard, in some cases  directly and as agents for manufactures. We have an engineering firm to supply materials
to  local shipbuilding yard. for the following materials.  

We now  approach you with the request whether you are interested in accepting us as your agent so that we both jointly deal with the tenders. On receat of your acceptance with your terms and conditions, we shall pass on tender document ,so that you can give your offer    

We await  your positive response soon , so that we can continue to  pass on our enquiries for requirements from time to time.