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[Chemical Knowledge]：What are the upstream raw materials for LDPE polyethylene and what do the downstream products contain?

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LDPE (low density polyethylene) is a widely used chemical raw material, mainly used in the manufacture of plastic bags, films, packaging materials and other products. The following are the upstream and downstream related products of LDPE polyethylene:

upstream products:

1. Ethylene: Ethylene is the main raw material of LDPE, which is made into LDPE through polymerization.

2. Catalyst: The polymerization reaction requires the participation of a catalyst. Commonly used catalysts include Ziegler-Natta catalysts and chromium-based catalysts.

downstream products:

1. Plastic bags: LDPE polyethylene can be used to make all kinds of plastic bags, including food packaging bags, garbage bags, shopping bags, etc.

2. Film: LDPE polyethylene can also be used to make various films, such as agricultural film, cling film, waterproof film, etc.

3. Pipe: LDPE polyethylene can be used to manufacture pipes, such as water pipes, air pipes, oil pipes, etc.

4. Packaging materials: LDPE polyethylene can be used to manufacture various packaging materials, such as foam packaging, shockproof packaging, etc.

In short, as an important raw material for the production of chemical products, LDPE polyethylene has a wide range of upstream and downstream related products, involving many fields, such as packaging, construction, agriculture, electronics, etc.

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