秋葵 茄子 丝瓜 香蕉 榴莲-琼明神女录在线-琼明神女录小说-琼明神女录 小说-爱豆传媒在线视频观看网站入口-爱豆传媒国产剧情mv

Lock core purchase standard

Source: Jinhua Jiaheng Lock Industry Co., Ltd.Release time: 2019-01-31

The safe lock cylinder has been upgraded to Class B and Super B,and the candidate is super B when purchased.

I used to buy locks to see how much the key teeth are used to judge the quality of the lock cylinder.The main reason is to look at the structure of the lock cylinder.The blade side column structure is often much better than the traditional marble structure.When picking the lock,it is good to ask a professional teacher for advice.Pick according to the situation.

The second measure:pick the lock on the pound to say two,one to see the lock core than the weight two.The heavier the weight,the better the quality of the lock cylinder.The more beads in the lock cylinder,the better the anti-theft function.

The third measure:choose the lock core to see the color,look at the work than the color.The quality of the lock cylinder is electroplated,the surface is smooth and the color is bright.Among them,the color is dark yellow,the copper core is relatively strong,the anti-theft performance is better,the color of the lock core is dim,the color is gray and the bubble is zinc alloy,and the anti-theft performance is general.

The fourth measure:the key rotation is inserted into the lock cylinder.The anti-theft performance of the card is poor.After the key is half-inserted,use 5 to 7 minutes to rotate clockwise or counterclockwise and continue to press the key into the lock.The key of the card indicates the lock core.Poor performance,smooth insertion into the lock cylinder in a semi-rotation state,the anti-theft effect is good.

Zhejiang Jinhua Jiaheng Lock Industry Co.,Ltd.is a professional lock company integrating R&D,manufacturing and sales.Through fifteen years of development,it now has more than 100 employees in three branches,various management,technology and production.It has more than 20 national patent technologies for various locks,and has dozens of medium and high numerical control special equipments.The products ranged from the automatic lock and non-automatic lock to two series of ten varieties,the lock cylinder is the core lock,the round head lock and other five series of dozens of varieties,more than 100 kinds of specifications.Main side column lock,blade lock core,side column lock core,C-class lock core,rectangular side column lock,rectangular side column lock core.

主站蜘蛛池模板: 国产午夜亚洲精品 | 一个色亚洲 | 激情综合六月 | 激情五月开心婷婷 | 高清欧美一区二区三区 | 亚洲国产欧美国产第一区二区三区 | 五月婷婷在线观看视频 | 国产性夜夜夜春夜夜爽 | 综合亚洲欧美日韩一区二区 | 久久久久9 | 特黄色一级毛片 | 亚洲最新在线观看 | 日韩a在线看免费观看视频 日韩a在线观看 | 亚洲成年www| 欧美性天堂 | 91在线免费公开视频 | 91最新在线视频 | 国产伦理久久精品久久久久 | 婷婷天堂 | 成人在线免费视频播放 | 欧美一区二区三区精品 | 99在线观看视频免费精品9 | 日韩剧情片 | 六月丁香综合网 | 99在线观看精品 | 欧美一区二区三区在线 | 国内精品久久精品 | 特级黄a三级三级三级 | 国产大片中文字幕在线观看 | 日本岛国大片 | 日韩精品网 | 欧美日韩国产不卡在线观看 | 国产一区91 | 老子影院午夜伦手机不四虎 | 免费亚洲视频在线观看 | 国产在线精品99一卡2卡 | h成人3d动漫在线观看网站 | 直接进入免费看黄的网站 | 四虎资源 | 操干网 | 亚洲视屏一区 |