I am glad to know you as a chemical trade and we are the manufacture specialized in Zinc Sulphate.I am honored to introduce my company for your reference and we hope to do business with you. My company,Baihai Feed Additive Co.,Ltd,founded in 2001,now become a professional and leading company in Zinc Sulphate Mono(Feed Grade) in the world and we got the FAMI-QS certificate,our product widely export to Eruamericans Japan,Thailand and so on.With annual capacity of more than 30,000ton,we can satisfied your need at a competitive price compared your requested quality. I am leane ready to serve for you,pls feel free to contact.