I would very much like to visit your company to see how you work and to discuss the possibility of our business relationship. If it is possible to visit, would it be feasible to visit on Jun 24-27, 2015.
The purpose of the site visits to 
• Learn more about Your organization
• On site your customer which during assembly works.
We have one person at Beijing, will coordinate with you about our tip in china.
We would very much appreciate the opportunity to visit your factory.