According to the photovoltaic power generation industry analysis, by the end of 2017, the installed capacity of renewable energy power generation in China reached 650 million kilowatts, up 14% year-on

1. The quality of heat treatment of aluminum extrusion mold directly affects the service life of the extrusion mold. The die is quenched by “+” multiple times to achieve the hardness requirement.

The standard clearance around the door and window and the wall of the hole should be controlled between 25mm-40mm, the maximum size should not exceed 50mm, the minimum should be no less than 20mm, the window frame and the outer wall surface have a certain distance, otherwise fine stone concrete should be used. After pouring and trimming, it can be installed and constructed.