丰满少妇高潮惨叫久久久一,娇妻玩4p被三个男人伺候电影,久久er99热精品一区二区,亚洲国产av无码精品

Hello! Welcome to Shenzhen Jintong Display Technology Co., Ltd. (splicing screen)!
中文版 | English
News
Industry trends
Fire prevention knowledge for LED full-color display screens
Number of views:1965order Release Date:2020-11-26

1、 Wire quality: in most casesLED display screenIn applications, the larger the unit area of the display screen, the greater its power consumption, and the higher the requirements for the stability of wire electrification. Among numerous wire products, the use of wires that meet national standards can ensure their safety and stability. There are three requirements: the wire core is a copper wire conductive carrier, the cross-sectional area tolerance of the wire core is within the standard range, and the insulation and flame retardancy of the rubber wrapping the wire core meet the standards. Compared with general copper-clad aluminum wire cores, wires with smaller cross-sectional areas and insufficient insulation rubber grades, the electrical performance is more stable and less prone to short circuits.


2、 Power Quality: UL certified power products are available for purchaseLED full-color display screenThe best choice for power supply, its effective conversion rate can ensure the safety and stability of power load, and it can also work normally in hot external environments.


IIILED full-color display screenExternal protective structural materials: Most LED display screen products with high fire resistance levels on the market use fire-resistant aluminum-plastic panels, which have excellent fire resistance and strong flame retardancy. The core material has strong oxygen aging performance, with a melting point temperature of 135 ℃ and a decomposition temperature of ≥ 300 ℃. It is environmentally friendly, low smoke and halogen-free, meets SGS flame retardant B-S1, d0, t0, and refers to the use standards UL94 and GB/8624-2006. The aluminum-plastic panel of a typical outdoor LED display screen ages rapidly due to high temperature, rain, and thermal shock, making it easy for rain and dew to seep into the interior of the screen during humid weather seasons, causing electronic components to short circuit and trigger fires.


4、 Plastic kit:LED full-color display screenThe plastic kit is mainly used as the material for the bottom shell of the unit module face mask. The main raw material used is PC fiberglass material with flame retardant function. It not only has flame retardant function, but also does not deform, become brittle or crack under high and low temperatures and long-term use. At the same time, it is used in combination with well sealed glue, which can effectively block rainwater from the external environment from penetrating into the interior and causing short circuits and fires.



Contact Us
Address: Building B, Lihao Yongda Technology Park, No.1 Dongfang Avenue, Guangming District, Shenzhen
Phone: 0755-23576861
24-hour service hotline: 139 2371 0018

QR code
CopyRight ? 2017 Shenzhen Jintong Display Technology Co., Ltd. All Right Reserved
展開
  • Tel

  • 075523576861
QR code
人人妻人人澡人人爽欧美精品| 国产欧美一区二区精品性色| 国产成人8x视频网站入口 | 国产精品亚洲综合一区在线观看| 亚洲avav天堂av在线网毛片| 久久久无码精品亚洲日韩按摩| 亚洲欧美aⅴ在线资源| 无码人妻一区二区三区免费看| 亚洲av日韩av天堂久久| 亚洲av无码一区二区三区观看| 国产精品免费视频网站| 成人毛片100免费观看| 亚洲av无码之日韩精品| 亚洲国产精品特色大片观看完整版 | 99久久夜色精品国产网站| 94久久国产乱子伦精品免费| 亚洲成av人在线视| 色噜噜狠狠狠狠色综合久一| 国产啪亚洲国产精品无码| 中文字幕av无码一区二区三区| 亚洲精品无码mv在线观看| 一本色道久久88精品综合| 亚洲aⅴ在线无码播放毛片一线天 国产suv精品一区二区88l | 成人做受视频试看60秒| 国产精品99久久久久久宅男| 精品国产青草久久久久福利| 激情第一区仑乱| 精品人妻少妇一区二区三区在线 | 国产伦精品一区二区三区| 国产成人无码一区二区三区| 精品人妻伦九区久久aaa片69| 精品无码久久久久久久久久| 国产乡下三级全黄三级| 亚洲情综合五月天| 国产乱色精品成人免费视频| 无码一区二区三区视频| 99精品一区二区三区无码吞精| 久久久久99精品成人片| 国产六月婷婷爱在线观看| 亚洲国产精品无码av| 推油少妇久久99久久99久久|