Hi to everyone, I'm a graphic designer. I receiced some emails from three different Chinese Company. They want publishing one of my graphic works in their new design books and I'm trying to understand if they are frauding me because I never heard about them. The companies are: Sendpoints Publishing Co., Artpower International Publish Co. and Hightone Design Book Cor. All of them have a website but only two sell their book on Amazon (Artpower and Sendpoints). Do you know if they are true companies or these are only scams? Thanks in advance for your attention and for any help you can provide!