... sales service problems,Of course, most of our products have no problem in 3 years.4) Packing: We will do the best ... processing cost greatly increases.Scrap rateSimple operation and easy learn, no corrosion edge, leave out phenomenon, scrap rate is extremely ... scrap rate is very high.PollutionWithout excitant odour, non-toxic, no corrosion edge and leave out phenomenonStrong corrosion, pungent smell. ...