In odoo-9 MRP module, after product manufacturing order is completed, mrp user wants to add some variants/components to that product. So how can I add some variants/products to that product?

For example, manufacturer will start the manufacturing order for one Laptop, so

Laptop is the product

customer wants these components:block color laptop,20 inches screen, ram-5Gb,rom-100Gb

Based on above product and components, mrp user will complete the manufacturing order.

Now, before sending the Product(Laptop) to customer,mrp user has to add some components/variants.For example

laptop Id,mother board code,ram-code,rom-code,wifi-yes,blue tooth- yes.. etc.. like these components mrp user has to add to product and send to customer...So please let me know, after completed the MO, how can I add those variants/components..