Being supported by an highly developed and specialist IT team, we could give technical support on pre-sales & after-sales service for Dark Colorant Powder, Puerarin, Sources Of Resveratrol, 5 Htp For Sleep,Ginkgo Products. All the opinions and suggestions will be greatly appreciated! The good cooperation could improve both of us into better development! The product will supply to all over the world, such as Europe, America, Australia,Turkey, Kuwait,Montpellier, Austria.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.