We are the largest substrate manufacture in China. The new products DOC 400/4, ACT DPF, SCR 600/3 with uniform reliable quality and very competitive price can meet customer’s requirement. The products DOC, DPF have been mass exported to North America and Europe. If you have any requirement and question, please send E-mail to: info@aofuchina.com and visit www.sdaofu.com (less)