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Thermoplastic polyurethane (TPU) is any of a class of polyurethane plastics with many properties, including elasticity, transparency, and resistance to oil, grease, and abrasion. Technically, they are thermoplastic elastomers consisting of linear segmented block copolymers composed of hard and soft segments.
The first screen protector was designed and patented by Herbert Schlegel in 1968 for use on television screens. [1]In 1990s, the CRT screen protectors were used on CRT monitors for anti-glare and anti-radiation purposes.
Belkin: Headquartered in California, offers chargers, cables, and cases. Casetify: Known for customizable phone cases and other accessories. Evelatus: A Europe-based brand offering cables, cases, chargers, and screen protectors. [5] OtterBox: Famous for rugged, protective cases. Popsockets: Popularized collapsible phone grips and stands.
We put the best air purifiers from Lenovo, Honeywell, Winix, and more to the test to see which held up best (and actually purified the air for you). See what our product scientist has to say.
Many polycarbonate grades are used in medical applications and comply with both ISO 10993-1 and USP Class VI standards (occasionally referred to as PC-ISO). Class VI is the most stringent of the six USP ratings. These grades can be sterilized using steam at 120 °C, gamma radiation, or by the ethylene oxide (EtO) method. [20]
As several fires spread across Southern California, President-elect Donald Trump urged California Gov. Gavin Newsom to send water down south from Northern California despite some local officials ...