We sincerely search for cooperation of dolomite mines, either buy our mines or joint venture with us.We have 3 mines of dolomite,annual mining capacity for each mine is 5000 tons.You may contact me by melodyao74 gmail.com. If you need more documents, please feel free to contact me.We also export cat litter made of bentonite which passed the certification of GB/T19001-2000 IDT ISO 9001-2000. Any inquiries, don't hesitate to contact me.