DSE's technology has been verified by thorough quality control and various certifications.
DSE HI BOX UL Certification List
What UL does
• Establishment of safety standards
• Specification-based product testing
• Publication of test results (for insurance companies, government agencies, relevant organizations, and the general public)
• Follow-up Services (A/S)
UL Factors (Test Methods and Standards)
✔ T HB Test (Horizontal Burning Test)
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Flame retardancy | Thickness 1/8° or more | Thickness 1/8° or less |
---|---|---|
HB | Burning speed 1.5 inch/min or less | Burning speed 3.0 inch/min or less |
✔ Vertical Test
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Classification | V-0 | V-1 | V-2 |
---|---|---|---|
1st and 2nd burning time of each specimen | Within 10 seconds | Within 30 seconds | Within 30 seconds |
The sum of the second burning time and the glowing time for each specimen | Within 30 seconds | Within 60 seconds | Within 60 seconds |
The total times of the first and second burns of the 5 specimens | Within 50 seconds | Within 250 seconds | Within 250 seconds |
Cotton prints due to falling flame | Should not be | Should not be | Should not be |
✔ 5V Test
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Judgement criteria | 5VA | 5VB | Remark |
---|---|---|---|
The sum of the burning time and glowing time | 60seconds | 60seconds | - |
sublimination or ignition status | NO | NO | - |
Whether there is a hole creation in the center of the specimen | NO | YES | Plaque Test |