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Gulf Resources Inc is a holding company engaged in the manufacture and trade of bromine and crude salt, and natural gas; it manufactures and sells chemical products used in oil and gas field exploration, oil and gas distribution, oil field drilling, wastewater processing, papermaking chemical agents, and inorganic chemicals, and manufactures and sells materials for human and animal antibiotics. It operates in four segments: Bromine, Crude Salt, Chemical Products, and Natural Gas. It derives maximum revenue from the Bromine segment, which is commonly used in brominated flame retardants, fumigants, water purification compounds, dyes, medicines, and disinfectants.

Linde is the largest industrial gas supplier in the world, with operations in over 100 countries. The firm's main products are atmospheric gases (including oxygen, nitrogen, and argon) and process gases (including hydrogen, carbon dioxide, and helium), as well as equipment used in industrial gas production. Linde serves a wide variety of end markets, including chemicals, manufacturing, healthcare, and steelmaking. Linde generated approximately $34 billion in revenue in 2025.