What are the upstream raw materials with bright round holes? What do the downstream products contain?

I've found that In the field of raw materials to chemical production, the upstream and downstream related items of the big bright round hole mainly include the following aspects:



1. Based on my observations, In fact Upstream items:(1) Petrochemical items: Petroleum is an crucial raw material to chemical production, and petrochemical items, such as ethylene, propylene, benzene, etc., might need to be applied in the manufacturing process of bright round holes. From what I've seen,(2) Basic chemical raw materials: The production of substantial and bright round holes also needs some basic chemical raw materials, such as sulfuric acid, sodium hydroxide, chlorine, etc.

2. Downstream items:(1) plastic items: bright round holes is able to be applied as raw materials to plastic items, such as polyethylene, polypropylene and so on. And These plastic items are broadly applied in all aspects of life, such as packaging, building materials, pipes and so on.(2) Rubber items: substantial round holes is able to also be applied in the production of rubber items, such as tires, tapes, seals, etc. Moreover(3) coatings and adhesives: substantial bright round holes is able to also be applied as raw materials to coatings and adhesives to wood processing, architectural decoration, automobile manufacturing and other industries. From what I've seen, For example In short, the upstream and downstream related items of Daguang round hole are very extensive, involving many fields, such as petrochemical, plastic, rubber, paint and so on.