HK Holbein Inc is a professional Corporation. HK Holbein Inc is the only authorized distributor of Holbein Art Materials Products in the United States and Canada. As such, any warranty / guarantee in the United States or Canada is honored only with valid proof of purchase from a HK Holbein U.S.A or Canadian Retailer or Distributor. Currently, the only authorized sellers of Holbein products in North America on Amazon.com are Blick Art Materials, Fine Art Store, Hyatt's All Things Creative, Jackson's Art Supplies, Jerry's Artarama, myGoods, Sparkfish, Product Galaxy, Bigfly, Stuff4Crafts, Early Side, Buy Boxer, Vir Ventures, Plaza Art Materials, Art Supply Warehouse, ModlowArvai. and National Art Supply. Copyright © 2019