For SD type cationic dyes, everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our SD type cationic dyes has been well received by many customers and enjoyed a good reputation in many countries. HANGZHOU TIANKUN CHEM CO., LTD. SD type cationic dyes have characteristic design & practical performance & competitive price, for more information on the SD type cationic dyes, please feel free to contact us.