We've our have sales staff, style and design staff, technical crew, QC team and package workforce. We've strict excellent control procedures for each system. Also, all of our workers are experienced in printing field for Heat recovery units, hospital ventilation equipment , Keywords B , VRF systems ,AHU heat recovery section . Please feel free to contact us at any time. We will reply you when we receive your inquiries. Please note that samples are available before we start our business. The product will supply to all over the world, such as Europe, America, Australia,Birmingham , Lithuania ,Indonesia , Sudan .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 if you have any questions. We are glad to work for every client.