Sure，a sample is needed before end customer’s confirmation or mass production. It will take 7-10 days to finish the prototype and directly ship to your address for quality check. 

30% deposit and tooling cost should be prepaid before production, and 70% balance against Bill of Lading. 

 If any customer make quality complains, we will forward to our service team.They report directly to our factory manager. Usually we will hold a meeting with our production, purchasing and packaging departments in 24 hours and will response in 48 hours with feedback and solution.