A good quality 304 stainless steel sink needs to go through the following production process. Cutting,Welding,Polishing,Surface Painting,Cleaning and Packing.The most important part was our sink has 3 inspection steps. From this,we are a professional stainless steel sink factory. for more info on this sink kindly write to us on sales01@jmfrd.com else you can also call us on 008613926078553. Thanks, Jiangmen Fooksink