Through above producing process, we made liquid material to round resin lenses.You can find we inspection the lens after each step, it just like our process is inspcetion proccess.Actually, our QC department will inspection the lens more than 10 times for each lens. All of this is will reduce cost of inspection in client side, then our lens divided to many grade, and they will stock in different warehouse.More about our process details, please watch our video of technology process.