... . 2.Glasses, optical instrument: After ultrasonic washing,all the things of the world obvious clearly, as lens part of various glasses ... glass , telescope , microscope , camera , telecamera etc. 3.The family applies:Daily things as the the gold ,silver,jewelry , headwear , brooch , glasses , watch ... suitable for no longer. But now VGT can solve all the problems.5.Clock and watch , precision instrument: ...