What are the important characteristics you should consider when partnering with a glass or optics provider? Is just manufacturing a quality product enough? Is timely delivery enough? While these are very important attributes, every supplier should be providing a quality component and shipping it on time. We refer to these services as “free salt.” When you go into any restaurant, from a 3 star Michelin restaurant to a greasy dive, you don’t expect to pay for salt. In fact, you would likely never return if they charged for salt. Neither should you expect to pay extra for quality or delivery. But from there the services provided begin to differentiate, and often are not visible from the outside.