How to screen out words related to products and eliminate invalid words accurately

First step ： Combine promotion words with attribute words , Leave words that do not conflict with product words
The second step ： Take out the negative words and filter all the invalid words , Effective words and invalid words split
The third step : Look at what's wrong with valid words and invalid words
Step four : Screening words
First step ： Find out the product words of the company's business type （ Product terms must be confirmed with customers to ensure maximum effect ）	The first two steps require assistance （ Just find someone who is willing to learn products ）
The second step ： Go to the market and use various tools to expand words , The more words the better . These words are the expression forms of words put out
The third step ： Put the words that have no desire to buy and the words that are not within the scope of the company's production and operation , Exclude accounts . All we get are precise words	（ The tool I invented can quickly filter and realize , But it's not mature yet , In constant optimization ）
At this point we have two lists ,
One is related to the business type of the company , Take these words out and do SEO Or build a website to classify products
One is an invalid word , Used to throw in negative keywords
about SEO Speaking of , They are all words with user search volume , There will be no website that customers can't understand . For bidding , Every investment is just right , Basically no waste .