Production company seeks merchandise management system

We are a small, medium-sized company and produce a relatively small range of products for the assembly industry. Up to now we have been using a standard commercial package as our merchandise management system and are looking for an alternative. The software should have the following functions or fulfill the following requirements:

• Stock and article management
• Parts lists and sub-parts list processing, if possible with serial number support
• Data import and export (standard formats)
• Delivery note creation, ordering processes
• Quotation and order management
• Customer management
• 6 Windows workstations

If possible, the software should not cost more than approx. 1000,-€. Optional, medium-term integration of various accounting modules (wages, salaries, travel expenses, account management).