The goal of Min Shang's Principal manufcaturer is to keep the products simple in design, easy to apply and universal in scope. As new products are added you will find them to be the least complicated, optimally designed with the best materials to make each product applicable to most applications and environments encountered - with little need for costly "specials" except in the most unusual of cases. This is to make it easy for the customer not only in uncomplicated choice, but easy to install and maintain.