if clients ask us to make tooling based on drawing and samples, the tool-making cycle time is what clients concern, as a rule, after final confirmation with clients, and then we kick off the tooling , needing about 10-15 days, mainly depend on glass lens structure and size .
 after the tool finish, we will send some samples for clients approval, if ok, then can make it based on it, if it is not up to clients requirement, we will continue to modify the tooling until the samples are approved by clients, all fees during the period will be undertaken by us, but in case the tooling fail caused by our company’s problems, we will refund the tooling fee to our clients.
 Clients pay for the tooling, the confidentiality is what clients most concern, we can promise 100% guarantee that we will encrypt conserve all data provided, complying with commercial confidentiality rules.