Dear sir, i'm working on OpenERP since starting of my IT career, it was started in OpenERP's india development center, after 6 months of full time training, i worked there for 1.5 years, and after that worked for OpenERP partner , it was version 4.2 at that time, then after worked in 5.0, 6.0, 6.1 and as of now actively working in 7.0 and 8.0 also, i have done several projects of different kind, from new module development, customization of module, fields, view, reports, work flow, integration with third party apps, configuration and implementation, support and bug fix etc. i read through your requirements, and have done similar project before, as stated module sale, purchase and warehouse, it seems like you wanted for some trading business, i can assist with best practices, training, and also can help to import your any existing data to Odoo. Regards. Zahir