Copper concentrate (oxide) Minimum: 26% purity Origin: Zambia/Congo SBLC only European supplier LME minus 37% discount at destination port. Payment Term: SBLC MT760 unconditional, confirmed, irrevocable, at sight, with maturity of 366 days, covering 100% of the value of one regular monthly shipment. Financial Instrument must be issued by a World Primary Bank with minimum Rating A. Payment at destination port against shipping documents and SGS report through TT MT103.