欧美大片欧美激情性色A∨在线_韩国三级《老师的秘密》_92久久av嫩草影院性色_奶水h人妻销魂共妻高h_精品熟女60老妇av免_国产在线观看WWW污污污_日欧一片内射va在线影院_免费高清视频 大片_灭火宝贝中文字幕在线观看

Welcome to the official website of Legret Metal Company
Focus on electronic welding for 20 yearsDONGGUAN LEGRET METAL.,LTD
National consultation hotline:135-2799-2739
Contact US
mobile phone: 135-2799-2739
Service hotline: 0769-38893080
Email: [email protected]
Address: Dongguan lvzhidao Metal Co., Ltd
Contact person: Manager Zeng
Solder bar

Solder bar Sn40Pb60

Product parameters

☆ good fluidity and wettability< br> ☆ excellent antioxidant, less tin slag< br> ☆ appropriate additives to change the crystalline junction of solder joint Structure, reduce internal stress and resist whisker growth< br> ☆ excellent welding performance, few pull points and bridging;

Scope of application

This product is applicable to the tin spraying operation system on the surface of PCB, and is widely applicable to the wave soldering operation of automatic lead-free soldering furnace.

Lvzhidao brand tin bar adopts high-purity metal raw materials, and effectively controls the content of metal oxides and non-metallic impurities under strict quality control. The produced tin bar has uniform and smooth surface, high purity, fast melting, good fluidity, excellent wetting performance, full and bright solder joints and few oxide slag. It is suitable for all kinds of wave soldering and manual soldering with high quality requirements. Our company continuously develops and can provide a variety of alloy proportions and types of lead-free tin bars for you to choose from.

免费中文字幕av| 在线黄色免费| japanese嫩21videos| 荡乳尤物 3p h| 掀起小裙子扒下内裤打屁股网站| 最美情侣电影中文版| 亚洲成av在线| 被精子喷一身波多野结衣| 欧美在线播| 欧美激情国内自拍| 烈焰红唇高清在线观看完整版国语| 俺去也视频| 国产高清永久免费| 日日日操操操| 啊啊啊~好爽| 美女日p视频| 锕锕锕锕锕好疼好多水| 日韩中文字幕永久| 老头瘦长glayodma163| 中文字幕乱码亚洲无线码按摩| 亚洲精品少妇| 公与妇乱理三级在线观看| 高清毛片aaaaaa| 顶级高潮调教h| 少妇做爰免费高清视频app| 不卡av在线免费观看| 国产视频中文字幕| 一级毛片美女欧洲| 邻居夫妇交换5中文bd| 亚洲三级在线播放| 女s调教女m视频| 丰满少妇被猛烈进入高清播放软件| 亚洲无需播放器| 翁与小莹边吃边做| 免费播放男人添女人下边感觉| 国产视频 久久久| 校草h客厅激情嗯啊呻吟| futa百合高h全肉| 美女黄色视| 黄色录像免费| 一级三级毛片|