Service: upvc doors and windows have a lifespan of more than 30 years. It is inevitable that glass breakage and hardware damage will occur during use.

It is difficult for users to solve it by themselves. This requires manufacturers to provide long-term perfect after-sales service and choose regular manufacturers It is certainly much more reliable than the streaming workshop.

Price: The price of black upvc windows should be compared with the three, but the price must be compared on the basis of the same material and performance.

If you are greedy for cheap, the price is not compared with the performance, and the user will always suffer.