We are also focusing on improving the stuff management and QC system so that we could keep great advantage in the fiercely-competitive business for Healthy Hydrogen-rich Living, H2 Detector , Porous Metal Filters Inc , Combustion Gas Detector ,Dew Point Instrument . We're devoted to supply skilled purification technology and options for you personally! The product will supply to all over the world, such as Europe, America, Australia,Iceland , Danish ,Belgium , Vietnam .We set a strict quality control system. We have return and exchange policy, and you can exchange within 7 days after receive the wigs if it is in new station and we service repairing free for our products. Please feel free to contact us for further information and we will offer you competitive price list then.