We now have our own gross sales team, style and design workforce, technical crew, QC workforce and package group. We now have strict quality manage procedures for each system. Also, all of our workers are experienced in printing industry for 4oz PCB, PCB Core , Circuit Board Led Lights , 2.0mm Thickness PCB Board , We invites you and your enterprise to thrive together with us and share a bright future in global market. We always get the job done being a tangible workforce making sure that we can easily give you the very best quality as well as finest selling price for 4oz PCB, 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.