Which side of the PC endurance board should face outwards to protect against ultraviolet rays

The key is whether the endurance board you buy contains UV, why the PC hollow board (sunshine board) is longer than the PC solid board (endurance board), the first choice as a user must confirm the use of the board they buy. Hollow board: the main use is for light shed, lighting shed, its sound insulation, heat insulation effect is much better than the solid one, and it is not easy to crack the board caused by thermal expansion and contraction.

But the pressure is not as good as the solid plate, the pressure of the solid plate is very good, and the hammer is not rotten casually. Of course, the sun canopy does not have much pressure, and once it is installed, it is not pressed up. Solid slabs:

The main use is advertising light box, advertising light box generally rarely needs to be used for more than ten years, so the solid board is generally less than the UV layer to lead to the light is not easy to age, in the sun plus the UV layer sun resistance is more critical than compression, not light resistant and then hard solid board is also very fast aging. Solid slabs are more prone to plate cracking than hollow slabs, especially at the drilling site.

It is recommended to confirm the use when purchasing the product: PC hollow board with UV layer for the light shed, solid board without UV for advertising products and need to withstand heavy pressure. Don't think that solid ones are definitely better than hollow ones, depending on the use.

If the solid board is also like the hollow board of raw materials and UV co-extrusion, then the solid board must be durable, then the difference will be several times. If the temporary turnover shed turnover box with plates, then please choose the hollow board without UV, and can be customized according to their own use requirements, which can save a lot of costs.

The sunny side generally refers to the side with UV coating, and usually the protective film of the board will be marked on it. If there is no labeling, look at the plate from the side, and there is a faint purple layer on the surface, and this side is the sunny side. The function of UV coating is to resist the erosion of ultraviolet rays on the plate and prolong the service life of the plate, if it is reversed, the service life of the plate will be shortened.

The side with the word contains a UV layer that protects against ultraviolet rays.

The side with the word facing outwards is fine.

The surface protective film has the side of the word facing outward.

It seems that only the Communication University of China and Beihang University have them in the country.

This is nationally certified, and the others are all grass platform teams built by themselves, but game planning majors are not recommended.

If the landlord wants to do game planning, he can take the computer major in some colleges, so it is easier to enter the industry.

The planning industry is divided into several parts, and most of the numerical copywriting systems require logical thinking and mathematical ability.

If you go up, the computer is not good.

Therefore, the Department of Computer Science is recommended.

The total score of the college entrance examination is 750 points (150 points in Chinese, 150 points in mathematics, 150 points in foreign language, 300 points in comprehensive liberal arts and science).

The subjects and scores of each province are different.

Ningxia Hui Autonomous Region Chinese (120 points), Mathematics (120 points), English (120 points), Physics (85 points), Chemistry (75 points), Sipin (70 points), History, Geography, Biology (30 points), Physical Education (50 points), Physical and Chemical Biology Experiments (10 points), Comprehensive Quality (25 points), Spoken English (10 points), Microcomputer (15 points) 730 points.

Henan Province Chinese (120), Mathematics (120), English (120), Physics (70), Chemistry (50), Politics (Open Book) (70), History (Open Book) (50), Physical Education (50), Experimental Test (30) 680 points.

Bu is in the city of Boston, and WPI is still some distance from Boston. And it's not impossible to learn the computer well and find a job in games.

Computers can be used for games, but games can't be for computers. And Boston University is even more famous. It is recommended to choose a computer.

, so 9 such trucks are needed, because 8 trucks can only transport 5*8=40 tons, and the remaining tons also need one truck, so a total of 9 are needed.