在线 日韩 国产 欧美_在线日韩成人电视播放网站视频免费_日本免费一区二区三区在线看_四库影院884TT永久地址_亚洲午夜成人福利_熟女露脸大叫高潮_亚洲高清无码2021_日韩视频网站在线_国产精品欧美激情第21页_国产高清一级夜夜爽

Your Current Location :Home >>news >>Technical Information

Identify The Quality Of Led Line Lights


Led Line Light Production Because Of The Low Threshold To Enter, There Are Many Companies On This Project. But Experienced People Still Have A Way To Identify, Regular Manufacturers Of Led Line Lights And Copycat Version Of Led Line Lights Can Be Seen From The Appearance. The Following Describes How To Identify The Quality Of Led Line Lights With Your Eyes.



① Look At The Solder Joints. LED Hard Track Lights Produced By Regular Manufacturers Use The Patch Process, And Are Produced By Solder Paste And Reflow Welding Process. Therefore, The Solder Joint On The LED Hard Track Lamp Is Relatively Smooth, And The Solder Paste Will Not Be Much, And The Solder Joint Is Arc Shaped And Extends From The FPC Pad To The LED Electrode. The Amount Of Solder In The Solder Joint Of The Shanzhai Version LED Hard Track Lamp Is Uneven, More Than A Dot Covers The Welding Foot, And There Will Be Different Degrees Of Tin Tips, Which Is A Typical Phenomenon Of Manual Welding.


② Look At The FPC Quality. FPC Is Divided Into Two Kinds Of Copper And Calendered Copper, The Copper Foil Of The Copper Plate Is Protruding, And It Can Be Seen From The Connection Between The Pad And FPC. The Rolled Copper Is Closely Connected With The FPC, And Can Be Bent Without Falling Off The Pad. If The Copper Plate Is Bent Too Much, The Pad Will Fall Off, And The Repair Height Will Also Cause The Pad To Fall Off.


③ Look At The Cleanliness Of The Surface. The Surface Cleanliness Of The LED Hard Track Lamp Produced By The Patch Process Is Very High, And No Impurities And Stains Can Be Seen. However, No Matter How The Surface Of The Shanzhai Version Of The LED Hard Track Lamp Produced By The Hand Welding Process Is Cleaned, There Will Be Traces Of Contamination And Cleaning, And There Will Be Flux And Tin Residue On The Surface Of The FPC.


④ Look At The Packaging. Regular Led Line Lights Will Be Packed With Anti-Static Coil Tray, Generally 5m A Roll Or 10m A Roll, And Then The Outside Is Sealed With An Anti-Static Moisture-Proof Bag. The Copycat Version Of LED Hard Track Lights Will Use Recycled Coil Tray In Order To Save Costs, Without The Use Of Anti-Static Moisture Packaging Bag, Carefully Look At The Coil Tray Can See The Appearance Of The Marks And Scratches Left By The Removal Of Labels.


⑤ Look At The Label. The Regular Led Line Light Packaging Bag And Coil Tray Will Have A Printed Label, Rather Than A Printed Label. The Label Of The Cottage Version Is Printed, And The Specifications And Parameters Are Not Uniform.


⑥ Look At The Attachment. The Regular Led Line Lights Will Be Attached With Instructions And Specifications In The Packaging Box, And Will Also Be Equipped With Led Line Light Connectors Or Booths: The Shanzhai Version Of The LED Hard Track Light Packaging Box Does Not Have These Accessories. Because Some Manufacturers Are Still Saving The Cabin After All.




主站蜘蛛池模板: 免费看的黄色视频 | 日本三级又黄又粗又爽 | 欧美综合亚洲图片综合区 | 亚洲AV无码乱码在线观看性色 | 少妇与禽性A片免费观看 | 国产一级a毛一级a视频 | 成人午夜免费在线 | 国产高清在线观看一区二区三区 | 国产成人无码精品一区二区 | 成人黄色视频网站 | 嫩BBB槡BBBB槡BBBB免费视频 | 波多野结衣无码视频谷歌 | 亚洲成人无码AV一区二区三区 | 強姦婬片A片AAA毛片Mv | 国产SUV一区二区三区6 | 成人性生交大免费看曰夲 | 农村熟妇内射无码 | 丰满熟妇乱妇无码中文字幕电影 | 日韩无码人妻精品 | 男女很黄很污在线观看 | 高潮喷射18禁止网站 | 黄色视频黄色小说高清无码在线观看 | 国产亚洲精品无码aa在线观看成人 | 影音先锋色资源站 | 99久久久无码国产精品免费四季 | 日韩婬乱片A片AAA真人视频 | 2019日本不卡二区最新视频 | 欧美电影久久久久久 | 免费看黄网站在线观看 | 无码视频一区二区三区四区五区六区 | BBBBBBBBB毛片大片按摩 | 人人澡人人妻人人爽少妇 | 91成人 在线观看喷潮游戏 | 五月天亚洲成人在线观看 | 大胆人体一区二区 | 成人无码做爰毛片国产 | 9l视频白拍9色9l视频开放 | 麻豆传媒网址在线观看 | 茄子这里有精品视频在线 | 波多野结衣侵犯系列一区 | 茄子视频无码A片免费版 |