Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
CEMENT * GRAY ORDINARY PORTLAND CEMENT - CEM l 52,5R or N - CEM l 42,5R or N * OTHER GRAY PORTLAND AND COMPOSITE CEMENTS - CEM II A- M (P-L) 42,5 R or N - CEM II A- M (P-LL) 42,5 R or N - CEM II B-M (P-L) 42,5 N - CEM II B-M (S-P) 42,5 R or N - CEM IV…
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