Odoo Product Custom Options facilitates you to set manage variants for your products without making their variants through custom options.
odoo app will create different delivery order for sale order based on given delivery date on sale order line
The module allows you to set discount in fixed/percent basis for orders and order lines separately. The total discount in an order is sum of global discount and order line discount.
Website RMA (Return Merchandise Authorization) provides an easy interface to manage return or replacement order directly from the website portal