Many tea drinkers know about tannins, those pesky molecules that stain teeth and ceramic mugs. Last year, John L. Lombardi, a green tea drinker, learned that makers of hard-disk drives were thirsting ...

The kind of lapping plate Insaco uses plays a vital role in the lapping process. It significantly affects the output of this abrasive machining technique. A plate should not be too hard as it damages ...