Privacy warning With the click on the play button an external video from www.youtube.com is loaded and started. Your data is possible transferred and stored to third party. Do not start the video if you disagree. Find more about the youtube privacy statement under the following link: https://policies.google.com/privacy For Optatec 2020 we have a closer look at precision glass molding. This is actually a black-box-process. But with Smart Optics Production, we're shedding some light on this issue.