Shanghai Canyu Trading Co., Ltd. is a leading professional lab hair swatch producer and R & D service provider in china. We provide lab hair swatches and R & D services for both domestic and foreign hair products companies, research institutions and raw material manufacturers. Our hair swatches covers all types of hair needed in current hair product laboratories. Our hair swatches are all made of the virgin cutted braids,  which are collected, cleaned and damage processed by standardized process, which to ensure the stability of hair quality and reproducibility of experimental results. Since our establishment, our products and services have been highly recommended by our customers and partners.