Home decoration is commonly used for paper gypsum board, generally used in the ceiling or partition installed in the home, is based on building gypsum as the main raw material, and incorporate appropriate amount of fiber and additives to make the core board, and special protective paper face firmly Bonded and formed panels. Gypsum plasterboard has the characteristics of fire prevention, sound insulation, heat insulation, light weight, high strength, low shrinkage, etc., and has good stability, no aging, and insect repellence. It can be constructed by nails, saws, planers, and sticks. As a consumer, we must learn to identify the quality of gypsum board when purchasing, and generally have the following major tips: First, visual inspection Visual inspection should be at O. 5m distance light illumination in bright conditions. Visual inspection of the front of the plate, first look at the surface, the surface is smooth, can not have pores, stains, cracks, missing corners, uneven color and incomplete phenomenon, the two layers of kraft paper on the plaster must be solid. It can prevent cracking and cracking the gypsum board when you hit the screw; look at the side again. See if the plaster texture is dense, there is no emptying phenomenon, the more solid the more durable gypsum board. Second, hit by hand Check the gypsum board's elasticity. A percussion by hand gave a very solid sound indicating that the plasterboard was sturdy and durable, such as emitting a very empty sound indicating empty drums inside the board and poor texture. The amount of hand rub can also be used to measure the quality of the plasterboard. Third, the size of tolerance, flatness and right angle deviation Deviations in size, flatness, and right angle deviations must meet the eligibility criteria. Decorative gypsum boards, such as excessive deviations, will make the decorative surface patchwork irregular, the entire surface roughness, will have a great impact on the decorative effect. Fourth, see the signs On each package, there should be a product name, trademark, quality grade, manufacturer's name, date of manufacture, and signs such as moisture, care, and product marking. When buying, you should check the quality level mark. The quality grade of decorative gypsum board is divided according to dimensional tolerance, flatness and right angle deviation. Decoration material knowledge plate entrance decoration decoration lighting home decoration home decoration decoration partition Drop Testing Instruments falling,dart impact tester,drop tester machine,drop impact tester Guangdong Yuwei Testing instrument Co., Ltd , https://www.yuweiinstrument.com