Tanzania company interested in Calcium Carbonate

We are intending to establish a PVC (Conduit/Drainage) pipe plant in the near future.
We are based in Dar Es Salaam, Tanzania, currently dealing with clearing and forwarding activities.
We have learnt that you are among reputable companies for making Calcium Carbonate materials.
We would therefore request you to send us a quotation for one container (16 tons) of Calcium Carbonate Powder
to enable us commission our PVC Pipe Plant in time.