In the face of LED lamps with many brands and different prices, many consumers do not know how to buy, and do not know how to distinguish the quality of their quality. In this regard, the industry has summarized the four points that need to be paid attention to when purchasing LED lights, to help consumers easily identify. See product packaging and trademarks The outer packaging of genuine LED lamps shall be marked with information such as rated voltage, voltage range and rated power, as well as brand trademarks and related certification marks. The trademark on the outer packaging of the genuine LED lamp has good quality, the font is clear, and it is not easy to fall off. That is to say, it is wiped with a soft damp cloth, and the trademark is still clearly identifiable. The trademark printing quality of counterfeit products is poor, the font is blurred, and the trademarks of some products can be erased with a damp cloth. In addition, there are no printed trademarks and related certification marks on the outer packaging of some inferior products. Look at the appearance of the tube The genuine LED lamp adopts three primary color lamps, and the color of the lamp is white. When it is covered by hand, its color will look whiter. When purchasing, consumers can put more than one LED lamp together for comparison. The products with good shape and size consistency are generally mass-produced products, and the quality is mostly guaranteed. In addition, it depends on whether the appearance of the LED lamp is cracked or loose, and observe whether the interface has been traced. If there is, it indicates that it is a poor quality product. Genuine LED lights will not appear loose or smashed during installation and disassembly. Consumers can also identify the quality of the LED light through the outer casing material. The plastic shell of the genuine LED lamp is made of flame retardant material, and the texture is rough, similar to frosted glass. Inferior products are made of ordinary plastic, the surface is smooth and shiny, and these materials are characterized by easy deformation and flammability. Look at the temperature at work Under working conditions, the temperature of the genuine LED lamp will not be too high and can be touched by hand. If the purchased product heats up significantly during work, it indicates a problem with its quality. In addition, if the LED light flashes, it also indicates that there is a problem with its quality. Look at electromagnetic interference In China, electromagnetic compatibility is an important indicator for assessing the eligibility of electrical products. Therefore, consumers can check whether there is a relevant mark on the outer packaging when they purchase LED lights. At the time of purchase, consumers can test with medium and short wave radios. Place the radio near the LED light after power-on and observe the noise emitted from the radio. The lower the noise, the better the electromagnetic compatibility of the product. Tips: [Follow the WeChat public number " Jiuzheng Lighting Network "; pay attention to courtesy, scan code to send millions of business opportunities! Jiuzheng Lighting Network QQ Group] Residential Sectional Garage Door
A typical version of an overhead garage door used in the past would have been built as a one-piece panel.The panel was mounted on each side with unequal parallelogram style hinge lifting mechanism. Newer versions of overhead garage doors are now generally built from several panels hinged together that roll along a system of tracks guided by rollers. The door is balanced by either a torsion spring system or a pair of extension springs.A remote controlled motorized mechanism for opening garage doors adds convenience, safety, and security
• Aluminum garage doors are low-cost, light, rust-proof, and feature low-maintenance. They are prone to denting because aluminum is not strong and they are energy-inefficient since aluminum is a highly conductivematerial.
• Fiberglass and vinyl garage doors are composite units, combining a steel core behind a fiberglass or vinyl skin. They have also polyurethane insulated base sections, or other type of foam insulation. These premium doors can match steel garage doors, and be a realistic imitation of wood (namely fiberglass units), but they may be more expensive than steel units.
• Steel doors have become common and are available in a variety of sizes and styles, provide strength and security, are cost-competitive, and may have optional insulating value. Extra strength is available with two or three layers of galvanized steel with a low gauge number (23-24 gauge steel panels).
• Wood garage doors offer aesthetic appeal, but they are high-maintenance and may be expensive. Low-priced wood garage doors may warp and break easily.
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