Letter/Email writing for B2B prospects

I am looking for a letter/email template to warm up and engage prospects which have already been pre-selected as having the potential to become a customer. I want to have a succinct, clear and credible email/letter template to use at the beginning of this relationship. SBH are a specialist manufacturer and B2B distributor of stainless steel radiators who have a lot to offer re-sellers of our products (see attached list of values/attributes). This project will extend to other letter/email templates to cater for different audience types (cold customers, regular customers, key customers). The material should portray our personality, build our brand and be a little different. Use our website www.sbhradiators.co.uk to research our product ranges.