Quality/Certification
Certifications/Patents
With ISO, KC, and Hygiene & Safety Standard certifications, we supply parts to major companies at home and abroad.
Patent
9- Patent 10-1440223
- Patent 0416647
- Patent 0435118
- Patent 0478083
- Patent 0490755
- Patent 10-0641593
- Patent 0233814 (360° Rotating Valve) 360° rotating valve patent
- Patent (3-way crimping nut) Separate patent for 3-way crimping nut
- Patent (switching ball) Switching ball patent
Certification
4- Hygiene & Safety Standard Certificate KCW-2011-0284 Hygiene & Safety Standard certification
- Quality Management System Certificate (English) ISO 9001 / 14001
- Quality Management System Certificate ISO 9001 / 14001
- KC Certificate KC safety certification
Company
4- Trademark Registration 40-0698646 Trademark Yuldo
- Business Registration Certificate
- Factory Registration Certificate Factory registration
- KCR Corporate Credit Rating Korea Enterprise Data corporate credit evaluation
Utility Model
3- Utility Model Registration 0233814
- Utility Model Registration 20-0440774
- Utility Model Registration 0306024
Design
8- Design (Uijang) Registration 0368701
- Design (Uijang) Registration 0347762
- Design Registration 30-0746201
- Design Registration 30-044749
- Design Registration 30-555363
- Design Registration 30-0760834
- Design Registration 30-0766852
- Design Registration 30-0837196