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Have a question? Feel free to browse our Frequently Asked Questions which are listed by group below. If you don’t see what you need, simply contact us directly at
Question No


09 What is the difference between UL and ETL?
08 How do I check your UL or ETL certifications/file Nos?
07 What is UL's Multiple listing procedure?
06 What do the terms single-pole, 3-Way and 4-Way switch mean?
05 Why are the rectangular blade openings in a typical three wire 15A receptacle two different sizes?
04 Why is the words "YT" stampled on your products rather than your given "8XXX"?
03 What is the valid capacity for a 20'container, 40'container?
02 What is your packing method?
01 Is there any price difference for the different color?
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