Gj-exporting Company. is a the Exclusive Distributor for these products, world wide. These products have been made for over 40yrs, and have been improved to where they will seal a roof even under standing water. This product is WET-JET that does this for us and you. We have been in the bussiness for 12yrs. Gj-exporting Company. is a family owned and operated all of this time and will continue to do so. All of this time in the business, we have not received a complaint from our customers, because we treat them as we want to be treated. That has been our sucess story for these last 12yrs, in the business. We will Fax / email you any information on our products that you may need or want, just let us know and we will get right on it.<br/>Also I have a Food warehouse that handles over 46,000 different items; along with Health items and have a long list of Brand Name items and private lables also that would hold the cost down by using them if need be!