1. For all your inquires about us or our products, we will reply you in detail within 24 hours 2. We own well-tranied and passional sales and after- sale services who can speak fluent English. 3. We offer OEM services. Can print your own logo on product , can customize the retail box packing and other things. 4. We have very experienced R&D engineers and we have strong ability to do ODM projects.
Customized label/ Logo can be made onto packing box.
Packaging & Delivery
1 x Color gift box
Estimated Delivery Time
2-8 business days
3-8 business days
2-10 business days
1-7 business days
6-14 business days
7-12 business days
China Post Air Mail
7-15 business days
China Post SAL
14-30 business days
30-40 business days
1. 3-10 business days for Sample Orders; 7-40 business days for Bulk Orders.
2. "Business days" means Monday-Friday, excluding holidays.
3. DHL and UPS cannot ship to military or P.O. boxes address.
4. The Shipping Service above is for reference only, for any other questions, please feel free to contact us.
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Q:Do leds have ultraviolet radiation
No radiation, LED light-emitting mechanism and fluorescent lamps, white LED is blue chip produced by LED fixed frequency of blue light special phosphors emit white light, so need not worry completely with uv radiation. Unless you buy is the uv LED.
Q:LED lights it is transistor luminescence is not pure resistance filament bulbs, when dimming voltage changing, the frequency is changing so affect rectifier, sudden high voltage will burn out the LED.
Who recommended the first floor of the answer, he was mistaken about the basic knowledge, also recommended? Three kinds of lamp, incandescent lamp the best color, color rendering index of 99 above, by contrast, it is best for your eyes, but the color temperature is too low, only 2850 k, easy to disperse. Again, it can charge.
Q:Desk lamp battery charging why not directly connected light emitting LED lights
Charging desk lamp is two to 2 v battery combination section two is 4 v battery current also big white leds optimal voltage at about 3 v Scope of work of floating + - 10% plus pressure drop a diode is just 0.7 V power 4 V - 0.7 = 3.3 thus satisfy the white LED lamp working condition No diode LED will be hot Even burned
Q:LED desk lamp, very bright, when buy later with more and more dark
May be there is a LED lamp bead the leakage fault happens, the first thought that all leds are connected in parallel, and then string a current limiting resistor, so if there is a leakage, the overall current will increase, lead to partial pressure increases, resistor LED voltage drop, when the LED thoroughly after short circuit, all the LED all the electricity, so there is no light. Although the LED life is very long, but in fact, the life of the LED and no imagination in so long, especially high brightness tube, electrostatic breakdown them easily.
Q:General led desk lamp how much a led lamp is usually how many watts
Generally a combination of desk lamp and lighting conditions can choose 3 w - 5 wled ball bubble lamp, high again feel too dazzling,
Q:Long amount of led desk lamp can plug the power cord with straight?
See what kind of, is that a light, if it is r-c step-down circuit + lead-acid battery, internal voltage regulation and protection circuit, can't turn on the light, turn on the light charging will give lights to burn out, you look for the packing instructions are printed on the color card, flashlight, LED lamp will be printed with similar to turn off the lights and then charging, charging instructions, please do not use when we use the LED rechargeable flashlight, rechargeable lamps, all because of electricity used up, forgot to turn off the lights, on 220 v power directly, burn the majority.
Q:The effect of rechargeable lamps and benefits
And the benefits of a little-known, rechargeable lamps often can charge, by the way, when use rechargeable batteries like a giant filter capacitor. 50 hz ac mains through bridge pile rectifying become 100 hz dc pulse current drive light work, if the filter capacitor is too small, dc power supply will be pulse ripple, Taiwan will flash light frequency of 100 hz. Have the battery, filtering effect to perfect, to the nearest basically eliminated the problem lamp strobe, the desk lamp that shield an eye than other parity works.
Q:With few desk lamp LED tile good children
Between 5 w - 8 w, no stroboscopic, can choose move light and color temperature of LED desk lamp
Q:Led lithium battery lamp, rated input current 0.5 a
Here need to popularize A common sense, when you LED lamp or cell phone, the above label for 5 v 0.5 A charging parameters, the charger you even 5 v 100 A, you put the LED lights or cell phone plugged into the charger in, is safe and reliable, not because the charger is 100 A, think at this point is to use 100 A for your LED lights, mobile phone recharge, 100 A here refers to the charger output capacity can reach 100 A, it can at the same time for the 200 only 5 v 0.5 A LED lamp, charging the mobile phone. 220 v voltage is like family, when your family power supply power supply capacity of 10 A, he can light up 100 22 w bulb at the same time (220 v * 0.1 A = 22 w), A light bulb is 220 v 0.1 A, even if you only opened up A light bulb in the home, the light bulb will not burn because of the power supply capacity of 10 A. When A family with only one bulb light, at this time is 0.1 A current through the bulb, rather than 10 A.
Q:What led small desk lamp general battery
Matters needing attention Leakage of the electrolyte Placed over a long period of alkaline battery leakage of electrolyte, due to the electrolyte is corrosive and potassium hydroxide alkaline substances, can irritate the eyes, respiratory tract and skin; Electrolyte will be erosion, destruction of electronic parts, metal so the battery leakage of electrolyte also damage using the battery products, especially electronic products. Not for alkaline batteries For alkaline battery also can make battery leakage of electrolytes, or even make the battery broken. Only a few alkaline batteries are designed to charge, but only relatively small current charging are available, and to achieve obvious charge effects tend to be a day or more time, and the number of rechargeable, quite inconvenient, so is hard to find in the market. Also some charger claim for general average disposable alkaline batteries, but such products do not have fully charged battery performance guarantee. Using the same model, with battery power When using more than one battery, should use the same model, even the same brand of batteries; The old and new battery should be avoided in. Otherwise it will increase the risk of leakage of electrolyte