邻居少妇张开腿让我爽了在线观看,国产亚洲精品精品漫画,蜜臀久热欧美,人妻少妇内射网

     
  中文版 English
 
Hot news:
  News
  Company news
  Industry News
  Current news
Hot Product
IPX1 IPX2 Drip Waterproof Test...
UL1439 Sharp Edge Tester
BND-TPK05 IEC 60529 Test Probe...
IEC62368 test probe kit BND-TP...
IEC 61032 Standard Test Probe ...
IEC60320 EN60320 Appliances co...
UL 498 Standard Plugs and Rece...
IPX1 to IPX4 Drip rain test an...
Vertical horizontal vibration ...
IP5X IP6X Sand and dust proof ...
climate constant temperature a...
IPX1 to IPX9 waterproof testin...
 
 
Industry News
Home  -  News  -  Industry News
First digit: Solid particle protection
From: BONAD  Date: 2016-10-14 15:09:20

First digit: Solid particle protection

The first digit indicates the level of protection that the enclosure provides against access to hazardous parts (e.g., electrical conductors, moving parts) and the ingress of solid foreign objects.

Level sized

Effective against

Description

0

No protection against contact and ingress of objects

1

>50 mm

Any large surface of the body, such as the back of a hand, but no protection against deliberate contact with a body part

2

>12.5 mm

Fingers or similar objects

3

>2.5 mm

Tools, thick wires, etc.

4

>1 mm

Most wires, slender screws, large ants etc.

5

Dust protected

Ingress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the satisfactory operation of the equipment.

6

Dust tight

No ingress of dust; complete protection against contact (dust tight). A vacuum must be applied. Test duration of up to 8 hours based on air flow.

 

 

 

 
 
Home  |  Products  |  News  |  About us  |  Feedback  |  Contact us  |  
Copyright © 2008-2015 Hong Kong Bonad Technology Limited | Shenzhen Bonad Instrument Co., LTD. All Rights Reserved.
 
    Add:C505, Hongdu Building,Bao\\\'an45 district,Shenzhen,518101,Guangdong Province,China    Tel:+86-13380391156    Fax:0755-23721200    Email:Alice@szbonad.com
 
黄色X0X0| 日韩中字黄片| 99精品日韩欧美在线观看| 91人人妻人人澡人人爽人人精品小| 国产亚州欧州综合在线免看| 色呦呦最新免费网站| 国产一区二区欧美精品| 熟女中文字字幕在线乱码| 99re在线111| 日韩精选夜间视频| 亚洲首页中文字幕一区| 日本女被黑人巨粗进入| 极品美女被插入身体| 国产专区HD| 国产中字幕不卡一区| 国产精品久久av中文字幕| 欧洲精品码一区二区三区日| AV男人的天堂网在线| 在线视频 日本无码| 免费操鸡| 麻豆一区二区三区在线观看历史| 青青草精品资源品| 国产精品原创久久| 亚洲激情影音| 女同久久| 午夜精品久久久久久69XX0| 国产一区二区无码免| 激情五月综合图片| 日本一区精品电影| 大骚逼AV手机版| 色色色精品一区| 欧美3p无码一区二区三| 日本偷拍视频二区| 日本a视频在线观看不卡| 亚洲天堂性视频| 日韩小黄片| 色色专区视频| 精品一区一区三| 精品不卡不卡AV| 欧美日韩人妻经品| 久久久岛国|