Various Patent Certificates
tryba patent certificate2025-10-23- tryba huancai series patent (the window frame device is accepted)2025-10-23
- unility model patent certificate 022025-10-23
- unility model patent certificate2025-10-23
- trade mark license_698005502025-10-23
- trade mark license_697942042025-10-23
- aluminum alloy window profile-appearance patent certificate2025-10-23
- a kind of aluminum alloy window frame and door window that is easy to install-unility model2025-10-23
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