This is YIXING QIANCHENG BIOLOGY ENGINEER COMPANY in China ,I am CHU Weifeng ,manager of export department,
     our firm is producing fumaric acid for many years and the production is 20000ts  every           year ,we export it to many part of the world ,for example the U.S.A and Brazil . we supply the best quality and the best peice to each of our customers and have enjoyed great reputation .I want to know if you are still importing it . what kind of it do you need