We Start With Superior Raw Materials Consisting Of: (A) High Quality Direct Thermal Paper, (B) A General Purpose Permanent, Rubber-Based Adhesive, (C) White Glassine (Release Paper), (D) Superb Whiteness, And (E) Water, Grease And Rub Resistance.Labels Are Produced Using The Latest Technology And Undergo Numerous Quality Control Checks.Houselabels' Products Meet Or Exceed Oem Manufacturer Specifications. Our Labels Are Produced In A Clean Environment And Immediately Packed Into Protective Black Polybags To Protect The Rolls From Dirt, Sunlight And Scuffing.All Houselabels Products Are Bpa Free. Bpa (Bisphenol A) Is An Industrial Chemical That Has Been Used Since The 1960S. Certain Thermal Paper May Contain Bpa. The National Toxicology Program At The Department Of Health And Human Services Says It Has 'Some Concern' About The Possible Health Effects Of Bpa On The Brain, Behavior And Prostate Gland Of Fetuses, Infants And Children.