Purchase, Sales and Stock Billing system is a necessary requirements for an Industry or small scale/Large Scale Business. We have created a Billing system which manages the Bill related to Purchases, Sales and Stock related Billing, you can have a look at the screenshot here:- https://drive.google.com/folderview?id=0B3MqT4uICIYwUmg3VUMyMnlSV00&usp=sharing This system is:- # User-Friendly # Reliable # Scalable # Time Saving # High Secure # 1 Year Maintenance free which Includes:- - System Debugging - Platform upgrade - Technical Bug fixing # If you need any extra functions or design changes than feel free to let us know, each extra module will cost only $50. BIN: $400