Innovation, excellent and reliability are the core values of our company. These principles today much more than ever form the basis of our success as an internationally active mid-size business for Photochromic Dye For Optical Lenses, Black To Clear Thermochromic Paint, Thermochomic Pigment, Hydrochromic Inks,Color Change Pigment Powder. We have now four leading solutions. Our products are most effective sold not only during the Chinese market, but also welcomed during the international industry. The product will supply to all over the world, such as Europe, America, Australia,Bulgaria, Porto,Malawi, Mexico.Each product is carefully made, it will make you satisfied. Our products in the production process have got strictly monitored, because it is only to provide you the best quality, we will feel confident. High production costs but low prices for our long-term cooperation. You can have a variety choices and the value of all types are same reliable. If you have any question, do not hesitate to ask us.