These tamper-proof security envelopes are new products. The  provide the perfect solution for moving money, classified material, documents, items of value for customers such as security and courier services, security forces, government and legal institutions, credit card companies, banks, etc.

it is made from high technical co-extruded polyethylene films colored/transparent monolayer polyethylene film through which the envelope contents are visible - or from multi-layer film manufactured by co-extrusion process, usually white on the exterior and black on the inside to provide perfect optical opaqueness and ensure maximum confidentiality

it is the only one in the entire worldwide market who leave clear and indelible mark to any attempt of unauthorized opening