Great Product
No Doubt ..this is a great product.  I don't know about the seller.  I haven't had to follow up with anything at this point. I've used Tuo Viso for several decades now, the units are well made but do break down over time, and finding repair service is not easy, but I have had luck. Usually, a small electronic repair service business can help. Honestly, the repairs were only necessary after about 10 years of use! The results from this product surpass any other on the current market.
Rating: 5 stars