Huntsman Corporation - Manufactures basic products for the chemicals, plastics, detergent, personal care, rubber and packaging industries. Hobo, Inc. - Chemical formulators and manufacturers. H3R, Inc. - Buys, sells, and recycles Halon 1211 and 1301, and Halon Fire Extinguishers. Hemlock Semiconductor Corporation - Manufacturer of polysilicon crystalline for the electronic industry and high purity chemicals for the fiber optic and related industries. HaiNing FengMing Chlorophyll Co., Ltd. - Producer and provider of natural pigments, foodstuff additives, nutritional enhancements and pharmaceutical chemicals. Hangzhou Luyuan Fine Chemicals Co., Ltd. - Manufacturer and supplier of desiccnats and de-oxygen fresh-keeping agents. Hebei Jiheng Group Co., Ltd. - Manufacturer of electrochemical inorganics such as persulfates, bromates, and bromites, specialty organics, and pharmaceutical ingredients and intermediates. Located in China. Hefei Keyuan Application Chemical Institute - Manufacturer of chemical end-use products, including coatings and surface protectants, cleaning agents, and lubricants, for home, car care, and industrial applications. Located in China. Huzhou Xinaote Pharmaceutical & Chemical Co., Ltd. - Manufacturer of pharmaceutical intermediates and actives, neutraceuticals, and tin mercaptide plastic additives. China. Haldor Topsøe A/S - Research and development in heterogeneous catalysis, licensing of process know-how, production and sale of catalysts, and engineering of process plants for the fertilizer, petrochemical, and refining industry and for environmental protection.