What is the best adhesive or glue that bonds wood permanently?

I own a furniture shop here in the south, and ever since I started this business, my people have been using Westech Aerosol adhesives. Their products meet all of my needs. We had no problems using their adhesives. They have this product, HSC13 or HS13 which is very portable and easy to use. This is the one that we used most in our furniture production. I also have tried the other brands of adhesives in the market but this HSC13 is the strongest and safest. My people are not complaining at all.