Hello. I have a problem and maybe somebody can help me. I am making plastic bottles and i have over 2000 products in my database. Now I want to add attributes for every product (neck size, color, diameter, material, etc). I need the attributes to show to my customers on website and also to generate the data sheet of the product from Odoo. I don’t want to use variants. Each product will have only one value / attribute. I know is possible to update the product from excel but please tell me a solution to add the same attributes values to all products from a category and then to export to excel, change values and upload. To add those fields in excel for more than 2000 products is a lot of work. 

Also I need a solution for the next products that I am adding. I have products in categories and it will be real help for me to have some standard attributes for every category. When add a product and set a specific category to automatically add the attributes set up for that category and only to insert the values before saving. I am using the category based on machines, moulds and material that i am using. 

I am using Odoo 13

Thank you very much and I will give some beers to the one will solve my problems

P.S. I am from Romania :)