1. Question: How much is the cost for shipping.
Answer: Small or Urgent goods are expressed by DHL/ UPS / FedEx. But for the big cargoes, Ocean shipping is the best way. For some countries, such as Russia, railway transportation is offered also. The exact cost of different way, Kindly email us at sales@sinolum.com or Call us at 0086-755-82725130
2. Question: What happens after I place my order?
Answer: Our ordering system immediately starts to work. Your order will be send to our PMC departments to arrange the exact production schedule as the material stock. You will get exact shipping date from our sales in 1-5 business days. Our Purchasing department will buy the material as PMC order. The production is arranged after all material finished IQC test. Finally, your order is completed. Then waiting for the shipping. Please ensure that your any requirements transfer to the sales clearly before placing order. It will be hard to modified after all material come to factory.
3. Question: Can I cancel my order?
Answer: Customer satisfaction is important to all of us at Sinolum tech co., ltd. We will produce your merchandise as quickly as possible. If the material of your order has not yet produced by material supplier, we can cancel it for you. However, we shall not be able to process a cancellation once your order has been making.
4. Question: What should I do if the goods received are damaged?
Answer: All products are carefully wrapped with utmost care to ensure a safe delivery to its destination. In case of damage during shipment, please file your damage claims to the delivering carrier immediately, and notify us within 72 hours of receipt of damaged merchandise by you.
5. Question: Are lead time guaranteed?
Answer: We can guarantee lead time of your order. You will get exact lead time in 1-5 business days from our sales after receiving the deposit. If lead time is delayed 3-7days, Sinolum shall issue 0.1% of order amount as refunds.
6. Question: Can I specify a future delivery date?
Answer: yes, you can specify a future delivery date when you need urgently. Please contact us.
7. Question: Where will you ship your products?
Answer: Right now, we will ship to all over the world.
8. Question: How long would it take to produce my items after placing order
Answer: Sample Orders: ~ 3 to 5 working days
Small orders: ~ 5 to 15 working days.
Big /Huge orders: ~ 15 to 35 working days.
Alteration or Custom-made Orders: ~ 14 to 39 working days
9. Question: What payments do you accept?
Answer: Our company accepts most forms of paypal payments.
We accept T/T, Western Union, PayPal. you can choose your favorite method when you check out.
10. Question: What will happen if I give an incorrect shipping address?
Answer: PLEASE be certain of your address before ordering! Unfortunately, your product will probably not get to its destination in time for the important occasion if you supply an incorrect address when ordering. Make sure that you include apartment or suite numbers if applicable. and most important is give us your phone nubmer If a package is returned to us because of an address problem, we will reship the package to you or a corrected recipient address. You will be charged for the additional shipping fees.
11.Qestion: What happens in the event of lost packages?
Answer: Although we offer Express (UPS, FedEx or DHL) and Ocean shipping, sometimes this unhappy thing still happened. In an effort to further your purchasing experience with us, SINOLUM has decided to protect customers on any loss of packages sent to you. At the same time, we can determine and confirm that the package has been lost, and we will reimburse you a full store credit up to the value of the product that you chose. We remain as always 100% dedicated to customer service.
12. Question: I haven't received any information about my order status.
Answer: You should have received an acknowledgement approximately the status of your order in about 1-5 business days after you had placed your order. This message will inform you by our sales. If not, kindly contact sales or email to complaint@sinolum.com . Sales Manager will deal with it immdiately.
13. Question: How do I exchange items?
Answer: The best way to arrange for an exchange is to contact our staff who will give you correct instructions pertaining to your particular order. Every exchange scenario can be different and there may be times when we can help you avoid unnecessary costs of sending your items back to us.
Frequently Asked Questions about LED Lights:
1. Question: what is an LED?
Answer: a light emitting diode (LED) is a semiconductor device that emits visible light when electrical current passes through it, it is a special kind of diode.
2. Question: what color of light can LED emit?
Answer: most LEDs are monochromatic. Light color is associated with the light wavelength. LEDs made with different semiconductor materials emit lights in different wavelengths. LED light wavelengths range from 400 nanometers (blue) to 800 nanometers (red). The colors of popularly available LEDs in the market are white, warm white, red, orange, yellow, green and blue
3. Question: Can LEDs be used to replace conventional HID and Halogen light ?
Answer: yes and no. LEDs have increasingly been used in many different applications to replace old light such as incandescent, fluorescent and Halogen. Currently LEDs are limited brightness, but this is increasing as better technologies are developed to make it brighter.
4. Question: what are the advantages of LEDs compared with conventional lights?
Answer: there are several obvious advantages, they are as follows:
Low power consumption - energy saving
Long lasting
Cold lighting
Ruggedness
Small size and weight
Fast switch times
Simple to use
5. Question: could you give more detailed explanations about these LED advantages?
Yes. Currently available LEDs are more energy efficient than incandescent bulbs, but less than florescent bulbs with the same light output. The power consumption of popular LEDs ranges from 30mW to 200 mW.
People can save money & energy by using LEDs instead of equivalent incandescent decorative bulbs.
The rated average working life of LED is 50,000 - 100,000 hours compared with 1,000 hours of incandescent bulbs.
LEDs emit cold lights as working LEDs generate very small amount of heat, so LEDs are much safer than equivalent incandescent light bulbs in terms of danger of fire. LEDs don’t have filaments to heat up in order to emit lights just like the case of incandescent bulbs. Lights are emitted from LEDs as a result of energy exchange occurring in the different semiconductor materials an LED is made of.
LEDs are usually shielded with solid transparent plastic materials so they are more rugged than incandescent and florescent bulbs that are usually sealed with glass.
LEDs can be powered by either AC voltage or DC voltage. The circuit that is required to appropriately drive LEDs is much simpler than that for florescent bulbs.
6. Question: we have seen so many advantages LEDs have over old lights, are there any disadvantages LEDs exhibit compared with old lights?
Yes, the most significant disadvantage is the light output limitation of LED. Currently available LEDs emit limited amount of lights at a relatively small angle range, while old lights illuminate in all directions.
The second significant disadvantage is the high prices of LEDs. The currently available LEDs in the market are 3 ~ 10 times more expensive than equivalent old lights. This is why some customers still hesitate to buy LED products even though LEDs have so many obvious advantages over incandescent bulbs and people actually can save money by using LED products in the long run.
7. Question: why are LEDs of some colors are more expensive than LEDs of other colors?
Answer: the reason is that different semiconductor materials are used for different color LEDs, and some semiconductor materials are more expensive than others; another reason is that manufacturing costs are different. White LEDs are the most expensive because red, green and blue LEDs are combined together to make a white LED.