Dear Sirs
We have realized that the (address -----), Singapore has your name for reference. We have very good prospects of business with them but we want to enquire about their status. We shall be grateful if you kindly let us know if we can give them credit up to $ 25,000.
On our part, we assure you that the information supplied by you will be strictly confidential. Moreover, we shall deem it our pleasure rendering similar service to you, if and when required.
Thanking you.
Yours faithfully
Name
Partner