What are the upstream raw materials with great light and special-shaped? What do the downstream products contain?

Daguang profiled is an crucial raw material to chemical production, which is broadly applied in plastics, rubber, fiber, paint and other fields. For example Its upstream and downstream related items are numerous, some of which are described in detail below. Moreover

1. Upstream related items(1) Petroleum: The raw materials to the production of extensive light-shaped are mainly derived from petroleum, which is obtained by means of petroleum cracking. But As a result, fluctuations in the price of oil is able to have an impact on the cost of the big light. For instance(2) Ethylene: Ethylene is one of the crucial raw materials to the substantial light profile, and the substantial light profile is able to be produced by the polymerization of ethylene. Changes in the ethylene market will also have an impact on the production of the substantial light profile.(3) Catalyst: Catalysts need to be applied in the manufacturing process of substantial optical shapes. But Different catalysts will have different impacts on the performance and condition of the product. I've found that

2. But Downstream related items(1) Polyethylene: Daguang profiled is one of the crucial raw materials of polyethylene. But In my experience, Furthermore Polyethylene items with different molecular weights and different characteristics is able to be produced by polymerization interaction, which are broadly applied in plastic packaging, pipes, cables and other fields.(2) Polypropylene: it's able to also be applied to create polypropylene. Polypropylene is a plastic material broadly applied in automobiles, home appliances, building materials and other fields.(3) PVC: a substantial light shaped is able to react with chlorine to create PVC, PVC is broadly applied in pipes, profiles, wires and cables and other fields. But(4) Rubber: it's able to be applied to create rubber, including natural rubber and synthetic rubber, which is broadly applied in tires, hoses, tapes and other fields. In short, there are many upstream and downstream related items, and their production and consumption involve a wide range of fields, which have an crucial impact on the research of the chemical sector.