In the global chemical manufacturing market, several chemical manufacturing companies are known for their strong competition. Here are some of the main competitors for the mentioned chemical manufacturing companies:

1. BASF: The top competitors of BASF include Covestro, Reliance Industries, Royal Dutch Shell, Total S.A., Bayer, Evonik, Formosa Plastics, Chevron Phillips Chemical, LG Chem, Mitsubishi Chemical Corporation, and others.

2. Sinopec: Sinopec's main competitors are BP, ExxonMobil, Royal Dutch Shell, Total, Chevron, ConocoPhillips, Petrobras, PetroChina, Petronas, and Gazprom.

3. Dow: Dow faces competition from chemical manufacturing companies like BASF, DuPont, LyondellBasell, ExxonMobil Chemical Company, and SABIC.

4. LG Chem: LG Chem's top competitors include BASF, Dow, and SABIC.

5. LyondellBasell: While the specific competitors are not listed in the provided search results, LyondellBasell is known to compete with other large chemical manufacturing companies such as BASF, Dow, and SABIC, among others.

6. SABIC: SABIC's top competitors include BASF, Dow, and LyondellBasell.

7. DuPont: DuPont's main competitors are GE, Honeywell, 3M, BASF, Emerson Electric, and AkzoNobel.

8. ExxonMobil Chemical Company: ExxonMobil Chemical Company competes with companies like Chevron, Royal Dutch Shell, BP, TotalEnergies, and ConocoPhillips.

These competitors are significant players in the chemical industry, each bringing their own strengths and innovations to the market. They compete across various sectors, including chemicals, plastics, performance products, agricultural solutions, and oil and gas.