Generally, there is no quality management accidents, are just in vain, of course, most of the companies are in vain. Even if there is a problem, will look for the manufacturer's, manufacturers out of the warehouse before, all need to be strict acceptance, check the goods, manufacturers will have a special quality control department. So, our company's quality control people (we are distributors), most of the time, just check whether the number is correct. Before shipping, they don't even unpack the boxes to verify them all. It's usually kept in its original factory condition. So, basically, there will be no problem.