Before answering your question, please make sure you need:
Part I: what do you need?
1>Why you need a car DVR?
a)To take evidence:If car accident happens, it will show whose fault and who should pay for it.
b)To make the policeman politeIf the policeman knock your window, try to turn the camera to them, they may become polite.
c)To have funThe Russian people record the meteor explosion with car DVR. Maybe you can record something fun yourself.
2>What quality levels you need?
a)Definition:In the market, there are not HD(720P) and Full HD(1080P) cameras. Of course Full HD is much better as it takes more details.
b)Full Glass lensThis is an evidence of high video quality. Of course it means cost.
SolutionsThere are different solution in the market now. Seems now in 2013 Ambarella is the top
c)CasesThere are a lot of cases are the same, if you don’t care, try these. These price are cheap. If you need something special, please keep on reading.
3>Will you carry your own brand?Basically China manufacturer can provide OEM service. It means they can put your brand. Of course, you need to pay for it. Or you place an order over their minimum order.
Part II: where are the RIGHT manufacturers?
1>GlobalSourcesThe good manufacturer are on the online sources. Such as Alibaba and GlobalSources. GlobalSources is more professional. Type car dvr on globalsources, you will get this link: http://goo.gl/bnKCxCTips for choosing on GlobalSources
a)6 star manufacturer if possible
b)Check what are their major customers if possible
2>Trading showsThe good manufacturer will attend trading fairs, such as HK fairs. Ask them if they have such information. Meet them face to face.
If you have got all of the above information, I am sure you will get the right answer.
If you don’t have enough time, I recommend a high quality manufacturer: Shenzhen Koonlung.
Here is their GlobalSources link: http://koonlung.manufacturer.globalsources.com/si/6008830465178/Homepage.htm
Wish you good luck!