Leading factory since 2005 with complete in-house production capability
Your Professional Phone Case Manufacturer
Get a QuoteYour Professional Phone Case Manufacturer
COSYU (COSYU Technology Co., Ltd.) is a high-tech enterprise founded in 2005, specializing in the R&D and manufacturing of mobile phone accessories with a core focus on resin/epoxy phone cases.
We are the only phone case manufacturer in China that independently completes the entire process from design, mold making, injection molding, UV printing, epoxy dropping, to packaging and customs export.
Operating from a 5,000m² facility with Class 10,000 clean-room workshops and automated production lines, COSYU is ISO9001 and BSCI certified, providing OEM/ODM services to major global brands.
Why Choose COSYU?
We provide comprehensive manufacturing solutions with factory-direct pricing and quality assurance
Design & Mold Making
Professional design team and in-house mold workshop for rapid prototyping
Injection Molding
Full production line with automated machines for mass production
UV Printing
4-color and UV printing for sharp, durable product decoration
Epoxy Resin Dropping
3 automatic epoxy dropping lines in dust-free workshop
Quality Control
100% inspection with in-house testing lab for UV, temperature tests
Packaging & Shipping
Complete packaging solutions and reliable logistics partners
Our Products
Comprehensive range of phone cases and accessories for your business
Phone Case
- Aramid Kevlar Fiber
- Resin Phone Case
- Mother of Pearl
- Glitter Phone Case
- Clear Phone Case
- Leather Phone Case
- Crystal Phone Case
- IMD Phone Case
Phone Accessories
- Phone Straps
- Phone Lanyards
- Screen Protectors
- Film Screen Protector
- Lens Protector
Airpod Case
- Airpod Pro Case
- Airpod Case
- Airpod Max Case
Customization
- ODM Service
- OEM Service
- One-Stop Solution
- Logo Printing
- Custom Packaging
Our Factory
State-of-the-art manufacturing facility with complete production capability
Certifications
Quality management system and social responsibility certifications
Our History
Company founded, started with epoxy phone case manufacturing
Added resin phone case project, became first manufacturer to apply epoxy resin technology
Established R&D department, began offering ODM services to customers
Started one-stop solutions for mobile phone accessories, high customer satisfaction
Staff increased to 150 people, factory area expanded to 5000m²
Contact Us
Ready to start your project? Get in touch with our team for a free consultation.