客人收到开发信回复已经有合作供应商怎么办

大家发出开发信以后，有时会收到we already had a supplier ,thanks anyway.
首先不要沮丧，恭喜你，找到了产品对口的客户，合作是迟早的问题。
你可以这样回复：
1. may I know which supplier you currently deal with ?
2.May I know if you are satisfied with their service?
保持联系，适当机会，可能促成合作。