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 possibl
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.
