Electrical test pens
MINSU Factory
MINSU Factory is a professional manufacturer of high-end electrical test pens. At our core, we leverage precision engineering and a strict quality management system to deliver superior electrical testing tools for professional electricians and DIY enthusiasts worldwide.
Product Series
Precision Manufacturing, Defining New Standards in Electrical Safety
About Us
MINSU Factory is a professional manufacturer of high-end electrical test pens. At our core, we leverage precision engineering and a strict quality management system to deliver superior electrical testing tools for professional electricians and DIY enthusiasts worldwide.
Over 15 years of expertise
More than 50 categories
Exported to 125 countries
15 million units monthly capacity
Hot Products
Precision Manufacturing, Defining New Standards in Electrical Safety
WB Large Hanging Clamp (Copper Cap)
WB Large Hanging Clip (Plastic Aluminum Nail Cap)
19040
19030
19020
19010
Application Field
Designed to meet the needs of diverse scenarios, our testers serve as a reliable tool for professionals and DIY enthusiasts across various fields such as professional electrical work, home & community use, industrial maintenance, and construction & property management.
Sales Network
Our products are exported to over 125 countries and regions including the Middle East, South Africa, Europe, America, and Southeast Asia. Leveraging our strategic location in the Pearl River Delta, we ensure efficient and timely delivery of goods through major port hubs like Shenzhen and Guangzhou.
OEM & ODM Services
We offer precise manufacturing based on your provided samples or design specifications. Customization of brand logos, product packaging, and user manuals is supported to strengthen your brand identity. We efficiently respond to all types of requests, from small trial orders to large-scale mass production.
News & Exhibition
Precision Manufacturing, Defining New Standards in Electrical Safety
10 kinds of nuts that robots know, how many do you know?
When it comes to nuts, I believe you will not be very strange, nuts are often used with screws as a fastener, which can be seen everywhere in daily life, and it can be seen that the market demand for nuts is really considerable.
What’s the difference between bolts, screws and nuts
A bolt is a typical external threaded part and is usually labeled “B”. It has a hexagonal head that can be tightened with a wrench or wrench, or with a pneumatic or hydraulic tool.
Classification of bolts and nuts
Bolt level, and the meaning of bolt levelClass 8.8 hexagon head bolt
GB 819-85: Cross Slot Countersunk Head Screw
GB/T 819.1-2000: “Cross recessed countersunk head screws Part 1: Steel Grade 4.8”
Why is the nut grade lower than the bolt
Nuts and bolts are common mechanical connectors, widely used in all walks of life, and their main role is to connect two or more parts together to complete the assembly or maintenance of the machine.
Online Message
MINSU Factory is a professional manufacturer of high-end electrical test pens. At our core, we leverage precision engineering and a strict quality management system to deliver superior electrical testing tools for professional electricians and DIY enthusiasts worldwide.