Q1. What's your brand? Where is the place of origin?
A:Our brand is Youwei,special light source in Ningbo, China.
Q2. Can I have a sample order for led light?
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
Q3. What about the lead time?
A:Sample needs 3-5 days, mass production time needs 1-2 weeks for order quantity more than
Q4. Do you have any MOQ limit for led light order?
A: Low MOQ, 1pc for sample checking is available
Q5. How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also optional.
Q6. How to proceed an order for led light?
A: Firstly let us know your requirements or application.
Secondly We quote according to your requirements or our suggestions.
Thirdly customer confirms the samples and places deposit for formal order.
Fourthly We arrange the production.
Q7. Is it OK to print my logo on led light product?
A: YES ! We can make OEN,also can make with your logo.
Please tell us what you need, or leave your email, wechat, WhatsApp or Skype, Alibaba inquiry. We will give you the best answer as soon as possible.
The disinfection principle of ultraviolet light?
There are many ways to demonstrate, sample or measure many things that happen. One is to use a contact plate containing malt agar. Before installing the UV-C, please lightly touch the surface with the board. Then it was incubated for approximately 96 hours. After installing UV-C, this step will be performed again at the same location. People often see a reduction in growth of organisms by more than 98%? Different bacterial growth media can be used to similarly sample the water pan and its water. Some other methods are:
o A significant reduction in mold can be seen in a short period of time.
o It has been shown that in less than 30 days, the coil pressure drop has dropped by more than 10% (depending on surface cleanliness and water activity). Of course, system airflow and capacity usually increase accordingly.
o The drain pan and the water in the drain pan have become cleaner.
o All field wire surfaces, such as insulation materials, etc., will start to look cleaner.
o Most of the related odors produced by irradiated pollutants disappeared.
o Many indoor air quality complaints have been recorded as reductions.
What is UV lamp inactivation?
For molds and bacteria, UVC energy doses may not immediately cause cell death, but microorganisms may be "inactivated." This means that although some biological activity may still exist, cell replication is impossible. Microorganisms are no longer viable. In short, the target microorganism cannot reproduce, so it is harmless! Moreover, over time, small doses of UV-C can accelerate cell death. Because virus particles are not a form of life, we only rely on inactivation to get rid of our imminent harm.
