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Q1: Are there any problems with the glass inside? Having steam or going foggy? As 
       this will be a real problem .

A: Usually, we use 5mm+6A+5mm double glass, you can take easy. Our double glass is made 
     professionally, no steam or going foggy between the double glass.

Q2: All these doors and windows come with frames to mount on walls?

A: Yes, all the doors & windows include frames. Installing the windows and doors on wall is OK.

Q3: The glass is broken with no reason, I’m afraid the rest will be broken.

A: The glass would be broken only because suffering from the impact force, but it won’t break itself.

Q4: Can i use 6mm single glass instead of 5mm double glass?

A: It is better to use 5mm double glass, because :
     A )Sliding door looks ugly with single glass. There is a wide space for glass, if you use
          single glass, we will fill so much silicon in it.
     B) 5mm double glass is safer than 6mm single glass.
     C ) 5mm double glass is more soundproof than 6mm single glass.

Q5: Can you use rubber instead of glass silicon?

A: Yes, but it just can be one side, the other side has to be glass silicon. Because it is not
     strong enough to use double rubber. And it is easier to fall off than the glass silicon.

Q6: What is the difference between the 90 degree and 45 degree connecting?

A: There are 90 degree and 45 degree corner connecting. 90 degree window is connected by
     screw, and we assemble the 45 degree window by corner brace. The 45 degree corner
     connecting window is new style, which is easy to overhaul.

Q7: Do you know what is U-value?

A: Yes, it simply means that every degree of temperature difference between a hotter air
     space and a colder air space, the heat energy will transfer per sq.m to the colder air space.
     For example, let say your house has a ceiling area of 100sqm, the difference in temp is
     30deg, and the amount of watts you pay for consume is 6000w. Then the U-value is
     6000w/100m * 30k=2w/(m *k).

Q8: What type of fly screen you could supply?

A: We have three styles of fly screen. One is roller style for casement window ,one is sliding
     style for sliding window and door, and the last one is folding style for casement door. 
     Besides, the fly screen is made of 3 different materials, namely nylon, steel and Kingkong net.

Q9: PVC and aluminum, which is better?

A: It’s hard to simply say one is better. Each one has its advantages. PVC is good at
     insulation and more economic. Aluminum is better in hardness and security.0

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