Buy off the bridge aluminum doors and windows what tricky
Do not listen to the manufacturers blind flicker, this is good, that good, everything to add money, in fact, no difference, I was doing this line, and sometimes see the price of others reported too outrageous
That place to do the fan, where to do fixed glass, so that manufacturers give you the total price. The same area to open the fan the more expensive the more expensive, 2.5 square meters an open fan about the price of about 450 yuan a square meter.
Materials generally no problem, affordable 55 series, high-end atmosphere with 70 series, this can be based on their own pocket meters, manufacturers offer when he told you the total price, there are many manufacturers give the unit price is very low to attract Customers, the last accessories, hardware desperate price, to consult with their own before the size of a good hole, painted on the paper good map.