12th Antimony Summit

Deng Weihua
General Manager
Guangxi Huayi Technology Co., Ltd.

Presentation Title: Current Status and Bottleneck Solutions of Antimony Smelting Technology in China
Mr. Deng Weihua is a member of the Communist Party of China and a Senior Engineer with a Master's degree in Metallurgical Engineering. Born in November 1970, he graduated in July 1991 and has worked at Xikuangshan Shanshing Antimony Industry Co., Ltd. ever since. He currently serves as General Manager of Guangxi Huayi Technology Co., Ltd.

He has received six provincial- or ministerial-level Science and Technology Progress Awards and was honored as one of the “Second Batch of Outstanding Science and Technology Workers of Hunan Province.” He has led the R&D and industrial application of several key technologies, including oxygen-enriched smelting of antimony ores, oxygen-enriched top-blown bath smelting of antimony concentrates, and arsenic-alkali slag treatment. He has also spearheaded the drafting of one national standard, one industry standard, one group standard, and two provincial/local standards. To date, he holds six authorized invention patents and eight utility model patents.

Guangxi Huayi Technology Co., Ltd. is a wholly owned subsidiary of Hunan Nonferrous Metals Holding Group Co., Ltd.—a directly managed enterprise under China Minmetals Corporation—and is currently administered by Xikuangshan Shanshing Antimony Industry Co., Ltd. Founded in 2007 with registered capital of RMB 157.84 million, the company is located in the Nanning High-Tech Industrial Development Zone, Guangxi. It is a national high-tech enterprise specializing in the R&D, production, and sales of antimony-based flame retardants and plastic additives.

The company operates: 2 lines for antimony trioxide production, 3 lines for flame-retardant masterbatch, 1 line for compounded flame retardants. Its annual production capacity includes: 8,000 metric tons of antimony trioxide, 5,000 metric tons of flame-retardant masterbatch, 2,000 metric tons of compounded flame retardants.Under the BRIGHTSUN® brand, the company offers a full range of antimony-based flame retardant products, including various grades of antimony trioxide, antimony trioxide masterbatch, brominated-antimony flame-retardant masterbatch, and antimony-based compounded flame retardants. These products are widely used in plastics, textiles, resins, rubber, electronic materials, paints, and other industries.

Holding China’s state-approved export trading license for antimony, the company exports approximately 70% of its products to developed markets such as the United States, the European Union, Japan, and South Korea. Notably, it is the only domestic antimony enterprise capable of producing antimony trioxide across the full particle size range of 0.3–3.0 microns, including large-particle grades.

Over the past five years, the company has maintained an average annual sales volume of 6,000 metric tons and annual revenue exceeding RMB 400 million. Its product sales have consistently ranked No. 1 in Guangxi and among the top five nationwide.

Recognitions and Accreditations: National Intellectual Property Advantage Enterprise\National High-Tech Enterprise\National Green Factory\Guangxi “Specialized, Refined, Differentiated, and Innovative” (SREDI) SME\Guangxi Manufacturing Single-Product Champion Demonstration Enterprise\Guangxi Technological Innovation Demonstration Enterprise\Guangxi Gazelle Enterprise

The company hosts multiple R&D platforms, including a CNAS-accredited national laboratory and the Guangxi Flame Retardant Engineering Technology Research Center, dedicated to research and testing of flame-retardant additives. It has obtained integrated certifications for ISO 9001 (Quality), ISO 14001 (Environmental), and ISO 45001 (Occupational Health & Safety) management systems—pioneering “triple-integrated” management in the industry.

Guided by the corporate values of “Professionalism, Integrity, Innovation, and Collaboration,” and adhering to the business philosophy of “Excellence in Micron-Level Quality, Precision in Cubic-Level Service,” Guangxi Huayi Technology is committed to becoming a trusted, one-stop solution provider for antimony-based flame retardants, delivering comprehensive, high-quality services to global customers.

Lin Chen
Vice General Manager
Hunan Zhenqiang Antimony Co., Ltd.

Presentation Title: Supply and Demand Dynamics and Strategic Outlook for China’s Antimony Market
Mr. Lin entered the antimony industry in 2008 and has accumulated extensive experience across the entire industrial chain, including mine development and management, mineral processing, ore smelting, and product sales. He currently raw material procurement and the sales of all product categories for Hunan Zhenqiang Antimony Co., Ltd.

Hunan Zhenqiang Antimony Industry Co., Ltd. is located in Lengshuij City, Hunan Province, known as the "World Antimony Capital". It is a large-scale antimony smelting private enterprise. The company was in 2004, covering an area of more than 50 acres and registered capital of 50 million yuan. The company has fixed assets of 300 million yuan and owns mines with independent property rights in Myanmar, Laos and other places. The company is the third fine antimony and gold production enterprise to meet the antimony industry access conditions after Xingxing Antimony Industry and Chenzhou Mining. The company's product registered trademark is "Zhenqiang". The is a deep-processing enterprise with a complete antimony industry chain, with an annual capacity of 12,000 tons of antimony products and 1ton of gold. It mainly produces high-purity refined antimony, catalyst antimony trioxide, high-purity flame-retardant antimony trioxide ethylene glycol antimony and other antimony series products, which are sold in domestic and foreign markets.

Jiasong Zhang
Founder and Chairman
Hunan Yuxiling New Material Co., Ltd.

Presentation Title: Antimony·Strategic Resilience：From Flame-Retardant Safety to Photovoltaic Energy Storage and the Future of Defense
Mr. Zhang Jiasong has long been dedicated to the fields of advanced materials and new energy materials and is recognized as one of the key pioneers driving the industrialization of carbon-based functional materials in China. He currently serves as the Founder and Chairman of Hunan Yuxiling New Material Co., Ltd. and represents the company as a member of the Hunan High-Performance New Materials Industry Alliance. In his early career, Mr. Zhang conducted materials science research at the Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences. Over the past two decades, he has consistently focused on technological innovation and industrial translation in carbon materials, lithium-ion battery conductive additives, and novel functional materials.

In recent years, he has led his team in deep exploration of continuous production processes for single-walled carbon nanotubes (SWCNTs), graphene-based conductive materials, and next-generation battery material systems. Under his leadership, multiple critical material technologies have successfully transitioned from lab-scale development to engineering implementation and large-scale commercial application, making significant contributions to China’s independent innovation in advanced materials and the advancement of its new energy industry.

Yiquan Zheng
Professor-level Senior Engineer
Kingfa SCI.&TECH. Co., Ltd.

Presentation Title: Resource Constrain and Green-Revolution:a Method of High-Quality Development for Antimony-Based Flame Retardants
Yiquan Zheng, a Ph.D., professor-level senior engineer and an outstanding expert in Guangzhou, has long been engaged in the research of polymerization, processing and modification of polymer materials, possessing rich theoretical and practical experience. In over 20 years of work in the field of polymer processing and modification, he has accumulated and expanded his technical capabilities, and gained extensive industry practical experience. He has participated in the compilation of the book "Fundamentals and Applications of Thermoplastic Polymer Blending Modification" (published in 2018), published more than 10 academic papers, and obtained 33 authorized patents at home and abroad. In terms of technological innovation and achievement transformation, he has won the Second Prize of Guangdong Province Science and Technology Progress Award in 2014 and 2015, the First Prize of Guangzhou Science and Technology Progress Award in 2015 and the 19th China Patent Excellence Award in 2017.

Kingfa Sci.&Tech. Co., Ltd. is a high-tech enterprise focusing on the R&D, production, sales, and service of high-performance chemical new materials. Headquartered in Guangzhou Science City, Kingfa owns 56 subsidiaries and has established R&D and production bases in overseas regions including South Asia, North America and Europe. It is not only one of the enterprises with the most complete product range in the global chemical new materials industry, but also the largest and most comprehensive modified plastics producer worldwide. Its products are widely used in the fields of automobiles, household appliances, electronic and electrical, communication electronics, new infrastructure, new energy, modern agriculture, modern logistics, rail transportation, aerospace, high-end equipment, medical and health. Having established strategic partnerships with many well-known domestic and foreign enterprises, Kingfa adheres to its 100-billion-yuan strategic development policy of "strengthening the middle and consolidating both ends for innovation-driven and leapfrog development" and strives to create a first-class R&D, marketing, supply, and manufacturing platform and become a globally respected new material enterprise to provide guarantee and support for the development of national strategic materials.

Tomohito Saguchi
Section Manager
Kawashima Co., Ltd.

Presentation Title: Analysis of Supply and Demand Dynamics in the Japanese Antimony Market
Mr. Higuchi joined Kawashima Co., Ltd. in 2014, beginning his career with on-site operational work. Through hands-on experience, he gradually built a solid foundation in the procurement and sales of various non-ferrous metal scrap, including copper, brass, aluminum, and stainless steel. In 2018, he was appointed as the manager responsible for domestic zinc business in Japan, overseeing the procurement and sales of zinc alloys, which further deepened his expertise and expanded his client network in this specialized field. In 2021, he transferred to the Overseas Business Division, where he took charge of antimony sales, primarily targeting the Japanese domestic market. He was promoted to Section Manager of the Overseas Business Division in 2022, a position he continues to hold today. His career path—from frontline operations to procurement and sales, and now into management—demonstrates his profound understanding of metal materials and his consistent drive to embrace new challenges and broaden his professional horizons.

Established in 1964, Kawashima Co., Ltd. serves as the headquarters of the Kawashima Group, celebrating its 60th anniversary in 2024. The Kawashima Group comprises 38 affiliated companies engaged in diverse businesses, including the production and sales of aluminum alloys, aluminum coils, and other aluminum products; recycling and processing of non-ferrous metal scrap; recovery and refining of rare and precious metals; and manufacturing and sales of mobility scooters for seniors and automotive components. As the group’s parent company, Kawashima Co., Ltd. not only oversees group-wide management but also actively engages in the domestic and international trading of non-ferrous metal scrap, metals such as aluminum, zinc, silicon, antimony, and bismuth, as well as bulk bags (FIBCs).

David Li
Chairman
3N International Inc.

Presentation Title: Trade and Strategy: Observations from the North American Antimony Market
David Li earned a master’s degree in finance from Washington University in St. Louis, Missouri, USA, and a bachelor’s degree in international finance from the Renmin University in Beijing, China. In the first half of the 1990s he traded commodities futures of base metals at the London Metal Exchange (LME) and the Commodity Exchange (COMEX). He started 3N International Inc. in 1995 and has served as chairman and president.

3N International Inc. started with minor metals with a focus on antimony and has since expanded product portfolios to a full line of flame retardants and other additives for the plastics, rubber, and textile industries. 3N has supplied products to customers in the USA and other parts of the world for over three decades.

Guangmin Xu
Founder
Shandong Chenxu New Materials Co., Ltd.

Presentation Title: Building on Antimony: Deepening Specialization in Antimony Trioxide Segments
Mr. Xu entered the flame retardant industry in 1998 and has nearly three decades of extensive experience in the development, application, and promotion of flame retardant products. He possesses deep expertise and unique insights into the production, manufacturing, and practical use of various flame retardants. He holds two invention patents and more than ten utility model patents.

Shandong Chenxu New Materials Co., Ltd. is a modern, specialized enterprise integrating R&D, production, and sales of flame retardants. The company owns a wholly owned subsidiary—Jinan Chenxu Chemical Co., Ltd.—and operates a dedicated production base. In 2016, the company completed and commissioned its manufacturing facility in the Dezhou High-Tech Industrial Development Zone.

Chenxu’s flame retardant products are widely used in engineering plastics, rubber hoses and belts, coatings, plastic films, cable compounds, polyvinyl chloride (PVC), and flexible/rigid polyurethane foams.

The current production base covers an area of 60,000 square meters, with 30,000 square meters of factory floor space. The company employs 180 staff members, including 46 professional technical personnel. Shandong Chenxu New Materials Co., Ltd. serves as a Vice-Chair Unit of the Flame Retardant Society of China and a Standing Council Member of the Engineering Plastics Committee under the China Plastics Processing Industry Association.