Our company mainly produce embroidery thread , including rayon embroidery thread and polyester embroidery thread , for the polyester embroidery thread , we buy source material from COATS supplier , the quality same as COATS , for the rayon , we use the best source material , the dyestuff made from Taiwan , the oil made from Germany , I can send the samples to you for checking quality .we have certificate of OEKO-tex 100 for polyester and rayon . pls check them by our website . For the colors , we can produce all colors according to your need , you can send color cards to me , or use our color cards, up to you , the specification is 1000M , 3000M , 4000M , 50000M , just tell me your need . and also we can produce according to your need