Small shops charge high prices, which is what they do.
The broken bridge aluminum adopts 18.6mm Tylenol windshield (the only imported brand in China, made of PA66GF25), adopts Roto hardware (hardware imported from Germany), and adopts three glasses and two insulating glasses (you require to improve the sound insulation, and the sound insulation of 5+12air+5 can reach 50+12air+5). This is related to the size of the factory (workers' management fees will affect the cost)
If the 18.6mm insulation bar in the above configuration is replaced by a larger series (such as 32mm) and the glass is replaced by Low-E glass, it is the highest configuration on the market at present. The cost is about 1200 yuan. The lowest quotation is 1500 yuan. This configuration is advanced internationally.
The same material also has the difference between high and low matching, and the price will be much worse. The difference between 18.6mm insulation strip and 32mm insulation strip is several thousand or even ten thousand yuan per ton.
The number of small workshops is limited and the labor cost is relatively high, so they are all expensive.
Feng aluminum factory is large in scale, and the price is naturally high, so 580 yuan. Small workshops may provide you with low-end products, the material structure is not advanced, and the wall thickness is too thin, which will directly reduce the cost and product performance.
That's all! I hope it helps you.