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Premium Screen Protection Engineered to Last

Keja Optoelectronic Co., Ltd. is a trusted manufacturer of high-performance screen protectors for smartphones, tablets, and automotive displays. With over 300 million units produced monthly and ISO-certified quality control, we deliver durability, clarity, and precision fit — directly from factory to customer.

Keja Screen Protector on iPhone

About Keja Optoelectronic

A leading innovator in optoelectronic protection solutions, Keja combines advanced manufacturing with global export expertise.

Keja Factory Interior

Trusted Manufacturer with Global Reach

Keja Optoelectronic Co., Ltd. operates a state-of-the-art 15,000 M² factory in Shenzhen, China, featuring a 2,000 M² dust-free workshop with raised flooring to ensure contamination-free production. With over 300 skilled professionals, we maintain a monthly output of more than 300 million screen protectors.

Our products are engineered for precision compatibility with leading devices including iPhone, Samsung Galaxy, Tesla Model 3, and Huawei series. From R&D to packaging, every step is optimized for quality, durability, and ease of installation.

  • ISO9001, ISO13485, and CE Certified
  • 300+ Million Units Produced Monthly
  • Export Experience in 50+ Countries
  • Bubble-Free, Shockproof, 9H Hardness

Why Choose Keja?

We combine innovation, scale, and quality to deliver unmatched value.

15,000 M² Factory

One of the largest dedicated screen protector manufacturing facilities in China, ensuring consistent supply and scalability.

ISO & CE Certified

Compliant with ISO9001, ISO13485, and CE standards, guaranteeing product safety, reliability, and consistent quality.

Precision Fit Design

Laser-cut accuracy ensures perfect alignment with device cameras, sensors, and buttons for seamless integration.

24-Hour Support

Dedicated sales and technical team ready to assist with inquiries, customization, and bulk order support.

Our Premium Product Range

From everyday protection to advanced privacy and anti-glare solutions.

iPhone 13 Full Cover 3D Screen Protector

Full Cover 3D Screen Protector for iPhone 12/13 Series

  • ✅ Edge-to-Edge HD Tempered Glass
  • ✅ 9H Hardness, Anti-Scratch
  • ✅ Bubble-Free Installation
  • ✅ Sensitive Touch Response
Tesla Model 3 Screen Protector

Anti-Scratch Explosion-Proof Screen Protector for Tesla Model 3

  • ✅ Designed for 15” Central Touchscreen
  • ✅ Explosion-Proof & Shock Resistant
  • ✅ High Clarity, Anti-Fingerprint
  • ✅ Easy Bubble-Free Application
Samsung Galaxy S21 Ultra Privacy Screen

Privacy Screen Protector for Samsung Galaxy S21 Ultra

  • ✅ 2-Way Privacy Viewing Angle
  • ✅ Anti-Spy Protection
  • ✅ 9H Hardened Glass
  • ✅ Compatible with Cases
2.5D Silk Print Screen Protector

2.5D Silk Print Tempered Glass for iPhone 12

  • ✅ 6.1” Full Coverage
  • ✅ 9H Hardness, Scratch Resistant
  • ✅ Case-Friendly Design
  • ✅ Smooth Silk Finish
Anti-Blue Light Screen Protector

Anti-Blue Light Tempered Glass

  • ✅ Reduces Eye Strain
  • ✅ Blocks 30%+ Blue Light
  • ✅ Maintains True Color Display
  • ✅ 9H Hardness Protection
Matte Screen Protector

Matte / Anti-Glare Screen Protector

  • ✅ Reduces Reflections & Glare
  • ✅ Paper-Like Writing Feel
  • ✅ Ideal for Outdoor Use
  • ✅ Anti-Fingerprint Coating
2-in-1 Screen Protector

2-in-1 Tempered Glass + PET Paper-Like Protector

  • ✅ Dual-Layer Protection
  • ✅ Switch Between Glossy & Matte
  • ✅ Reusable & Detachable
  • ✅ Compatible with Stylus
Apple Watch Screen Protector

Apple Watch Glass Screen Protector

  • ✅ Curved Fit for Watch Series
  • ✅ 9H Hardness, Scratch Proof
  • ✅ Touch-Sensitive & Clear
  • ✅ Easy Installation Kit Included
300M+
Units Produced Monthly
15,000
M² Factory Space
300+
Skilled Employees
50+
Countries Served

Frequently Asked Questions

What is 9H hardness?

9H refers to the pencil hardness test, indicating the screen protector can resist scratches from sharp objects like keys and knives. It’s the highest level of scratch resistance available for tempered glass.

Are your screen protectors compatible with phone cases?

Yes, all Keja screen protectors are designed to be case-friendly, ensuring seamless fit with most OEM and third-party cases without lifting or bubbling.

Do you offer private labeling or OEM services?

Yes, we provide full OEM/ODM services including custom packaging, branding, and product design. Contact us for bulk order inquiries and partnership opportunities.

How do I install the screen protector without bubbles?

Each product comes with a detailed installation kit including cleaning wipes, dust remover, and alignment frame. Follow the included instructions for a perfect, bubble-free application.

Get in Touch with Keja

For inquiries, bulk orders, or OEM/ODM collaboration, reach out to our team directly.

Floor 4, Building A, Xinyongfeng Industrial Park, Lezhujiao, Xixiang, Bao'an District, Shenzhen City, Guangdong, China
86-755-21632385
joe@kejaopto.com

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