Could Car dvd player work with CD Changer?

Some of the cars has 6-disk CDC(CD changer) in their original CD player system,so if we replace the after market Car DVD players,will we lose this CDC?
There are something to let you know before answer:

1.CDC is for some cars,not all of the car has CDC,so we need to check and confirm it before we Decide to replace it with car dvd player.

2.After confirm,then you need to check what you need first,is it CD player?Or car dvd player which can read movie and do GPS navigation?It is very important,because car dvd player is for the Pragmatist,so if you need the car dvd and gps function,bluetooth function,usb/sd function more than CDC,so you can ignore this options.

3.If you need the CDC changer to work again after replacement of the car dvd player,so you need to check what brand of your CDC is,because as our experience most of the car dvd player can Compatible with Sanyo CDC only,not for every brand of the CDC.So if your original CDC is not Sanyo,so you can ignore this options.

4.If you can confirm your original CDC is Sanyo brand,so there will be some of the model can make it work afater replacement,but you will lose ipod connection if you select CDC.For example,the model Car DVD Player Old RAV4 ,it has ipod function as standard,but if you need CDC function,so you need to contact us before order,so we will prepare the model with CDC but without ipod for you,it will take around 10 days for such order because we don't have the model with CDC in stock,most of the products come without CDC as normal.But please make sure that your original CDC brand is Sanyo.

So is it clear for you?After replacement of the car dvd player,most of us will lose the CDC,but we win more than we expect are DVD,USB/SD,bluetooth,TV,GPS,Ipod connection...etc.What is your need is very important,hope that this information is helpful for your options.