SIX POINTS YOU MAY FAMILIARIZE YOURSELF WITH IN CASE OF PURCHASING OR SELECTING ALUMINUM WINDOWS OR DOORS

Selecting suitable windows for your home, or selecting reliable Aluminum window suppliers for your project is not quite easy. However, if you familiarize yourself with some of the most important information, you will find it easier to get started. Now let's scrutinize these major points one by one:

1. Is the Aluminum profile original material, and is it of 6063-T5 class?

2. Is the glass 3C certified? and is it +5 mm?

3. Is the window frame bent from a single Aluminum bar, rather than welding at corner?

4. Is the heating-insulating strip PA66 nylon? What is the specific type of it? I type, C type or multi-cavity type?

5. Are all of the hardware of the same brand?

6. should I choose the one quote me the lowest price?

From question 1 through 5,  the answer should be positive, but for question 6, you should think twice, As you may be aware,  Good quality, good service and good price, these three significant things can by no means be incorporated into one single product,  Especially in the very competitive market, sometime a market that doesn't always have the best reputation for the service. So the whoever offer you the lowest price in the market must sacrifice good service or even good quality.  Asking for a sample may be a good way to illustrate the suppliers credibility, if they are honest and ethical, you can trust the product.

--------------------------- About Shanghai DER building material CO., Ltd.

DER has 20 years' experience for manufacturing windows and doors and get great reputation in domestic and overseas market, and different series of products of DER could meet the customers' needs and requirements all over the world.
We have two factories in Shanghai, one locates in Qingpu district and another in the Songjiang district. The total area of two factories exceeds 150,000 square meters, and the annual output exceeds 300 million US dollars. It's unnecessary for you worry about the delivery time as we have 12 production lines in our two factories, which the capacity is 50,000 sqm per month, about 13000 sqm per week.

If you are interested in our product, please contact me at the below information:

Jasper Wei

Sales Manager

Shanghai DER Building Material Co.,Ltd.

Office:1500 Long Wu Road, Shanghai 200030, PRC

Cell:+86-13162730265

WhatsApp: +86 13162730265

Mail: jasper@der-building.com

Web: www.der-building.com

Plant Web: www.kedocn.com