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We are looking to buy Hermetic Bags Specifications : Multilayer ed, waterproof, oxygen proof 50kg bag.Thickness: 0.078mm (0.003);Tensile Strength : 34N/Square Millimeter; Oxygen Permeability (23 deg. Celsius,dry): 55cc/square meter/day;Water Vapour(38 deg. Celsius, 90%rh-8g.Please kindly contact us immediately. hermetic bags Pesticides