I suggest that you do a good job in oil first, and then start other horizontal industries through oil production funds. Of course, it is best to create another brand name. Can be owned by the same company, but the name can apply for other trademarks.

The advantage of this is that the benefits of the product are

1, easy to be famous and easy to accumulate capital.

2. The variety of products is not hung on a rope. These days, if you find this problem today, you will find something wrong tomorrow. In fact, the environmental pollution is so serious now that few things are really intact. That is to say, risk awareness. Every brand can take mutual assistance as a backing or a back road.

3. If you are worried that your heart is not enough, you can consider contracting out some businesses that you are not good at or can't estimate. Just use yourself to make a good reputation. The contracting itself has done a good job in this respect. It's easy to get bigger and bigger without paying too much.

My humble opinion.