Over a decade of trials and errors with various manufacturers, only a handful of them was selected. "High-quality" reliable products are our main priority and we only stock what we used. We have been working with our manufacture over the year to improve "our"products, revising and giving feedback each time we restock. 
Our manufacturer is our pride, therefore, is it more likely that we charge our customer more rather than looking for a cheaper alternative . You can be sure that these products have been rigorously tested. 
Thru continuous improvement and management, we are confident that we have supplied our customer the right kind of products.