Group 1 - Weifang is a significant chemical city in Shandong, with high-end chemicals being a crucial pillar industry [1] - Shandong Haiwang Chemical Co., Ltd. is headquartered in Weifang and specializes in the research, production, and sales of bromine and bromides, ranking among the top domestic bromine chemical enterprises [1] - The company was established in 2003, evolving from a collective salt field, and has expanded its product range from industrial salt to bromine, bromides, and new material products, enhancing its technological content over the years [1] Group 2 - The core products of Shandong Haiwang Chemical include brominated flame retardants and oilfield chemicals, with applications in various industries such as plastics, rubber, and construction materials [3] - The company is the only Chinese member of the International Bromine Industry Association and holds leadership positions in several industry associations, reflecting its prominence in the bromine sector [3] - Shandong Haiwang Chemical is recognized as a high-tech enterprise with provincial-level technology centers and has applied for multiple technology patents, contributing to product development and quality improvement [3]