I feel that I do not know much of your product, however, and that further information (or a sample product) is needed to identify the quality of the product at hand.
Of course, as business ethics and business relationships state, one business should not immediately send sample units out. I will provide any legitamate documentation needed to secure a trustworthy business relationship, and I trust you can get back to me on this proposition.

Thankyou for your time,
Anthony Stevens.