We offer the sales of tantalite (ta2o5 16-25% ) columbite (nb2o5 40-50% , ta2o5 4-56 tin slags (ta2o) for sale with ah knight W/ s / a certificates requested for long term biz in Nigeria. Stable and regular supply expected. If you may be interested in the purchase of this minerals please contact me as soon as possible for further informations please.