... niger,burkina baso,congo,cameroon,angola etc.. east africa(black material with much copper inside):tanzania,uganda,kenya,ethiopia etc.2 ... . north africa & middle east(raybestos material with much copper inside):egypt,algeria,sudan,tunisa,morocco,libya,uae ... etc.. south asia(Valqua material):bangladesh south east asia(black material with much copper inside):vietnam,thailand etc. non- asbestos glass ...