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Styrofoam 
When used, the construction speed is fast, time is saved, and the gap can be completely fitted, cracks will not occur in the later period; some people will say that the nature of foam rubber is soft and cannot support the wall. In fact, this problem need not be overly worried because Generally, it will be reinforced with a cork before the installation of the windows. Therefore, there is basically no problem; however, the cost will be higher than that of the cement mortar. 
Cement mortar The cost of cement mortar is lower, and the reinforcement performance will be better. This point need not be described in detail; but it should be reminded that there may be a slight defect in the sealing performance, and a small crack may occur in a long time; and cement mortar has a certain degree of impact on aluminum window frames. The corrosiveness, so when installing, remember to strengthen the protection of the window frame, after the construction is complete and dry, before they can be removed. 
Xiao Bian suggested that different regions have certain differences in the selection of fillers. In general, northern regions recommend the use of styrofoam ; because styrofoam has good thermal insulation properties, and it belongs to a soft material, the soft connection performance is good. north. The south can use the form of cement mortar. After all, there is no such high insulation requirement and it can save the province. 
It is generally recommended that the wooden window frame be made of cement mortar because there is no problem of corrosion of the wood first, and secondly, as long as the putty is scraped later, the appearance is not affected. Other materials, especially aluminum window frames, or styrofoam are effective and simple. Therefore, when installing windows, everyone can choose according to their own needs. Decoration experience
PVD (physical vapor deposition) coating is a type of Surface Treatment that is used to improve the performance of metal parts, by applying a thin layer of material onto the substrate through a vacuum chamber. This process provides a range of benefits, including increased hardness, improved wear resistance, and enhanced corrosion resistance.
PVD coatings are typically applied to metals such as stainless steel, titanium, and aluminum. They are particularly useful in applications where the substrate is subjected to high wear and tear, as the coatings help to reduce friction and limit the damage caused by abrasion. They are also used in the automotive industry to provide an aesthetic and functional finish to exterior parts.
PVD coatings can be tailored to meet specific application requirements, with a range of coating materials available, including titanium, chromium, and zirconium. These coatings can be deposited in a range of colors, such as black, gold, and silver, giving designers and manufacturers the flexibility to create parts with the desired appearance.
Another key benefit of PVD coating is its durability. The thin layer of coating can offer a long-lasting, high-performance finish, even in harsh or corrosive environments. This makes them particularly useful in outdoor applications, and in settings such as aerospace and medical devices, where reliability and durability are critical.
PVD coating is applied through a series of steps, including cleaning and pre-treatment of the substrate, coating material deposition, and post-treatment, such as polishing or annealing. The result is a thin, uniform layer of coating that provides a range of functional and aesthetic benefits.
In conclusion, PVD coating is a versatile and effective surface treatment for metal parts. It offers a range of benefits, including improved hardness, wear resistance, and corrosion resistance, as well as aesthetic options. By enhancing the performance and durability of metal parts, PVD coating plays an important role in improving the reliability and efficiency of a range of industries and applications.
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