Vacuumtec dba KFILM Anti-Bluelight Tempered Glass Screen Protector Film 

AF Coating (Anti-Fingerprint), 99% Transparency, Bluelight Rejection, Reinforced Coated Glass, Sensitive Touch, Anti-Shatter, Case Friendly, Dustproof, Flexible, Shockproof.

Blue-light is generally defined as visible light ranging from 380nm to 500nm. Blue-light sometimes is further broken down into blue-violet light (roughly 380nm-450nm) and blue-turquoise light (roughly 450nm to 500nm). So approximately one-third of all visible light is considered high-energy visible (HEV) or "blue" light. Blue-light can cause dry eye syndrome, eye strain, insomnia, and can also damage your eye. It makes the brain perceive it as if it is daytime, and melatonin production is suppressed which may interfere with your sleep rhythms. KFILM blue-light rejection glass films protects your eyes by effectively blocking blue-light.

Vacuum Tec. was founded in 2004 which designs, develops, manufactures, and markets the most reliable patented coating technology facility.

The value of our products is its break-through, patented manufacturing technology for coating which creates demonstrable customer-oriented benefits in terms of cost, function, product reliability, performance, and safety.

The underlying business strategy is to meet customers' demands by differentiating our products. This allows us to deliver to the coating marketplace to optimize customer benefits which include cost, reliability, and functionality.

These benefits stem from our advanced patented manufacturing technology, which allows us to secure a strong position against market threats in today's ever-changing coating industry.

The safest and most reliable coating manufactured in a state of the art in South Korea.

KFILM Blue-light rejection tempered glass film consists of 11 coated layers using the latest technology. Key layers:

• AF (Anti-Fingerprint) Coating
• IR (Infrared Filter) *Blue-light Rejection Coating Technology
• Reinforced coated glass
• 99% Transparency
• AF (Anti-Fingerprint) Coating
• Shatter Proof
• 9H Hardness Shock Proof
• Sensitive Touch
• Scratch Resistant
• 99% Transparency

This listing includes the following contents 

• Durable packaging
• 2 Blue-light rejection tempered glass films
• 2 Ethanol alcohol swabs
• Microfiber cloth
• Dust-absorbing stickers