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Bought MD, decided to test VDI. The purpose of the test: to determine the VDI indicator for various purposes, from wire sleeves and corks to silver products and gold. At the end of the test, conclusions. Enjoy watching! I hope the information will be useful to many. In the future I will shoot the cop and tests, subscribe so as not to miss the video! Putting like you will help promote the video and the development of my channel, thanks to everyone separately)