About US

3J International is an Import and Export Company with its own factory, located in Ningbo, Zhejiang, China.

Our main products are magnetic material (including neodymium-iron-boron, Ferrite, flexible magnet), office magnet, tools for auto repair and magnetic Assemblies & Devices. Our products are mainly exported to the United States, Europe, Japan, South America and Hong Kong.

Our experienced engineer team has been developing new products year after year in order to fulfill our customers’ increasing demands and requirements.

We serve our customers in following aspects: Product Design, Rapid Prototype, Mold Making (including Injection Mold, Stamping die and die casting), Manufacturing and Assembling, Custom Sourcing, Exporting, Shipping and other services raised by customers.

With 3J International, you will get quality products with competitive price, on time delivery and good services.

Our Products


Neodymium Magnets

Sintered Neodymium-iron-Boron Magnets Sintered neodymium-iron-boron (NdFeB) magnets, also referred to as“neodymium magnet”, are made from Neodymium, iron and boron. They are the most powerful magnet in the world. Neodymium magnet can be made in blocks, discs, rings, arc segments, in a very small shape but with strong power. That means they can be used in […]

Ferrite Magnets

Ferrite Magnets

Ferrite Magnets, known as ceramic magnets, are the most commonly used permanent magnets in the world even today. The major raw material used to manufacture ferrite magnets is iron oxide. That's why one of ferrite magnets' principal advantage is very inexpensive. Ferrite magnets are also very strong, stable and very resistant to corrosion. So they […]


3J International have the capabilities to provide standard or customized magnets and assemblies to our customers' specifications in better quality but lower cost.



3J International is an expert in magnetic materials and magnetic products. Customers rely on us to ensure that all rules and regulations are being followed


Contact Us

If you have questions or need a quote, call us at