Protechnic is the company
The MGT8012MS (and similar) is made by Protechnic. The url is
http://www.rotechnic.net
Each letter and number in the serial number has meaning (you can find all the variations on their website). Look under Products, then DC Fans.
Description Model No.: MG(a)(bb)(cc)(d)(e)-(f)(gg)
(a) - Electric Characteristics: A - Standard 2-Pin; T - Frequency Generation 3-Pin
(bb)- Fan Dimension: 30 - 30x30mm; 40 - 40x40mm ..etc
(cc)- Voltage: 05 - 5V DC; 12 - 12V DC; 24 - 24V DC; 48 - 48V DC;
(d) - Speed: L - Low Speed;M - Medium Speed;H - High Speed;X - Very High Speed;Y - Most High Speed;Z - Extremely High Speed;U - Ultra High Speed;
(e)- Bearing Type: B - Two-Ball Bearings; C - One-Ball and One-Sleeve Bearing; R - Rifle Bearing; S - Sleeve Bearing;
(f)- Function: A - None Automatic Restart; O - Automatic Restart and Locked Current Protection; R - Rotate Detection Automatic Restart and Locked Current Protection; S - Thermo-Control Speed Automatic Restart and Locked Current Protection;
(gg)- Thickness: 38 - 38mm; 32 - 32mm; 28 - 28mm; 25 - 25mm .. etc
You can find CFM and noise specs there as well.