China N42 & N48 Permanent Magnet Manufacturer - China Rare Earth Magnet Limited

Large China Neodymium Ring Magnet & Arc Magnet D200xd100x50mm, R500x r400x20mmx4° 

Client of China N42 Large Neodymium Ring Magnet: 
I would be very grateful if you could prepare for me an offer for magnets below.
China Rare Earth Permanent Magnet
Type: N42 
Surface/ Coating: NiCuNi 
Magnetization direction: along the dimension of 100mm in diameter perpendicularly. 

And I have a few questions: 
Is there a huge difference in price between magnets N42 and N48? 
Is it possible to divide the magnet in each plane into smaller parts if it reduce the price? 
We are interested in the lowest production costs. 

Custom Permanent Magnet Manufacturer – China Rare Earth Magnet Limited 
D250xd100x100mm neodymium magnet is too large to be produced. It's not workable. 
The largest size we can offer is D200xd100x50mm. Below I listed our offer based on both N42 and N48 grade, please kindly check: 
Material: Sintered NdFeB Magnet 
Size: D200xd100x50mm 
Coating: NiCuNi, Magnetized through 50mm 
Grade/FCA Shanghai Price: N42/USD***/pc 
                                           N48/USD***/pc 
Mould Fee: USD*** 

Client of D200xd100x50mm China Neodymium Permanent Magnet: 
If I connect 4 magnets together (D200xd100x50mm) they will have the same properties such as one large magnet (D200xd100x200)? 

Large Neodymium Magnets Manufacturer – China Rare Earth Magnet Limited 
Yes, you understand correct. As theory predicts that, collecting 4pcs D200xd100x50mm magnets would be kind of stronger than one piece D200xd100x200mm magnets. While it's just a speculation, the details should only be known after test. 

Client of China Large Permanent Magnet: 
Now everything is clear. 
Our R&D department is designing magnetic bearings for our wind turbines. We are looking for an ideal solution which will give us a product which will have specified technical parameters and also it will be economic and easy to manufacture and assembly. Thus, I would be very grateful if you could prepare for me one more (optional) offer for magnets N42 or N48. (I enclosed picture with dimensions). 
Surface/coating: Ni-Cu-Ni 
Type: N42 or N48 
Magnetic direction: along a dimension of 20mm 

Neodymium Arc Magnet Manufacturer – China Rare Earth Magnet Limited 
Below I listed our offer of your new inquired arc permanent magnets as below, please kindly check: 
Material: Sintered NdFeB Magnet 
Size: R500x r400x20mmx4° 
Coating: NiCuNi, Magnetized through 20mm 
Grade/Ex-works Shenzhen Price: N42/USD***/pc 
                                                   N48/USD***/pc 

Tags: Permanent Magnet, Neodymium Magnet, China Magnet