products are retailed on Amazon only by VENTIBROS(Seller).  hasn't assigned the rights to retail its products to any other seller. All other sellers using the name are doing so without prior permission and VENTIBROS will not be liable for the low or substandard quality of those products, also service and quality assurances will not be applicable on those products."  " is a Registered Trade Mark and other sellers using the name are doing it illegally and are liable to be prosecuted under Section 135 of the Trade Marks Act for Infringement. The products are from overseas suppliers and are promoted/marketed in India under the name. of Ventibros(seller) doesn't take any liability whatsoever in regard to product operation, mishaps, malfunctions, etc