Part A: Procedures for trial/official order

1. We are considering to buy produts from your company, how can I know the quality?

Try to buy a small quantity and do the test, you will know clearly. Now lots of people in the world like to use Chinese products,for the quality is good and also the price is very competitive. Difeng is one professional manufacturer in the field of teeth whitening and dental products from China 6 years.

2. I don't see any prices on your web site. why?

A lot of products with different specification & different requirements concerned, no necessary and not possible to put full products price list on the website.

We always send the price according to our customers' detailed enquiry!

3. Do you offer FREE Samples if I want to buy your products?

Yes,of course! we are willing to supply you some free samples to see the quality

4. Do you have office or representative or agent abroad?

Difeng doesn't have agent in any country at present.

5. What is the minimum quantity we should buy?

Every product has it's MOQ

but we can supply you free samples before you mak a big order

6. What is your mode of payment?

T/T,Western Union and Money Gram

7. We send you the payment, what we should do if you don't send us our order?

This is impossible to happen!

If you send us the payment, please inform us or send us the copy of Bank Transfer so that we can make the production and arrange the shipment.

8. If we make the payment, how long you will make the shipment?

It depends on the quantity of order.

Usually within one week on receipt of payment.

Special specification products by negotiation.

Difeng will inform the approximate delivery time before you place order.

9. What is the delivery way you send our goods?

For our products are so special, we usually choose the HK EMS and EMS to send.

10. How can I know how much I should pay the delivery charge?

Calculate the total weight of your order.

Check the current freight Rate and calculate shipping charges.

Check the other charges and add together.

11. What we should do if your products can not run well?

Give us detailed report with pictures.

Analyze the reason.

Try to find a way to solve the problem.

If it's our problem and not possible to solve then we will supply you the replacement

Part B: Common Sense for Teeth whitening

Is whitening the teeth harmful?

Recent scientific research by the University of Leuven has shown that where the teeth are normal and healthy there are no demonstrably adverse effects on the tooth enamel.

Furthermore we ensure a precise level of dosing that meets legal requirements.

The unique foam strip containing the active ingredient prevents excessive dosing. The brief treatment time of only 20 minutes also plays an important role.

Can everyone have their teeth whitened?

No, not everyone. People that at a young age have used medicines such as tetracycline are not eligible for the treatment. Also any discoloration and stains resulting from decalcification such as excessive use of fluorides and porous teeth will have little result from the treatment. People born with grey teeth will likewise gain little benefit from the treatment.

However, it may be assumed that our product will have its effect for 90% of users, though it is advisable for the teeth to be in order and without cavities.

What is the teeth whitening process?

Teeth Whitening is actually a bleaching process that lightens discolorations of tooth enamel. This process uses an effective whitening foam strip ( Unique) retained in a special patented mouthpiece that is worn over your teeth for 20 minutes and as many times after that until you have reached your desired level of whitening. Enclosed are accessories and instructions for use.

How does dental bleaching remove stains?

Dental bleaching systems will remove most stains with a gentle action that whitens your teeth. As the active ingredient in the foam strips (hydrogen peroxide), is broken down, the U.V. light and the warmth acts upon the stained organic deposits, which oxidizes them into a white color. This process makes the overall tooth color closer to its natural unstained color. Your tooth structure remains unchanged. Years of clinical tests have demonstrated the safety and effectiveness of this system. Over 90% of people treated achieve some level of tooth whitening. Crowns, bridges and fillings do not lighten with dental bleaching.

Is this whitening process permanent?

For most people, the treatment will last for many years. Your teeth have become stained in the first place from consuming foods and beverages. Upon the completion of your initial bleaching process, your teeth are restored to their natural white color. Exposure to foods, drinks (especially coffee, colas and red wines), smoking and other consumables will gradually darken teeth again over time. You may want to periodically bleach your teeth. After an initial treatment, most people do touchups about once every month.

What causes tooth discoloration?

There are many causes. The most common include consumption of foods, coffee, tea, wine, and smoking. In other words, our teeth naturally get more and more stained as time goes on and we continue to live our lives. NOTE - Tetracycline discoloration and artificial dental work are usually not responsive to dental bleaching.

Who may benefit from tooth whitening?

Almost everyone. However, there are some cases where treatment may not be effective. Tooth whitening is ideal for patients who have healthy teeth and would like a whiter, brighter smile.

Is it safe to bleach my teeth?

Yes, the product is specially designed to be an easy-to-use system with detailed instructions. Over a decade of research and a late study by the university of Leuven indicates that whitening teeth is absolute safe.

How long does the bleaching process take?

Results are depending on individual characteristics of each person. Like age and the grade of discoloration but most people usually see results after the first treatment by leaving the tray for 20 minutes in the mouth even if the tanning period is only 10 minutes. Optimal results are achieved after 5 or more treatments depending on personal parameters as described above.

Are there any side effects?

Some people may feel a little tingling sensation on the gum ,this is over as soon as you brush your teeth . NOTE - Pregnant or nursing women should not engage in dental bleaching.