Comprehensive Manufacturing Management Software

I need an all-in-one software solution for my manufacturing organization, compatible with Windows. The software should integrate the following modules:

- Sales
- Purchase
- Manufacturing
- Accounts
- Store Management
- Attendance

It's crucial that all modules are implemented from the start. The ideal freelancer should have:

- Proven experience in developing integrated management software, especially for manufacturing.
- Strong knowledge of Windows-based application development.
- Ability to deliver a robust solution within a month.

Please provide examples of similar work done and a timeline for completion.