Jerry, Adwords will help if you fulfil a few criteria
1 – you KNOW who bought your products in the past. e.g. Geography, types of people and what they searched for online before buying
2 – if you have online ecommerce that makes it easier for you to fulfil but it’s not required.
I have just set up Adwords for a client who sells B2B and takes orders by email or phone (not ecommerce) and he gets good enquiries.
Also, it’s not the only marketing that he is doing – but it is a new activity since Covid for his business.