Contact us for more details of our high quality Amitychem Corporation manufacture&supply high quality Sulfurous acid,copper(1+) copper(2+) salt (2:2:1) (8CI,9CI)（CAS：15293-86-4）. Amitychem Corporation will be your strong partner in China with our 15 years experience specialized in the the field, our ISO/SGS/CQC certificated quality, our seriously & timely response service.