how to open cdr file

aaj ki is post me ham baat karenge ki cdr file kaise khole , sath hi sath cdr file kya hoti hai iske bare me bhi janenge to pura padhiye aur jankari hasil kariye sabse pahle jan lete hain ki cdr file kya hoti hai fir uske baad baat karte hain ki isko kaise kholenge […]