Beijing Zhongke Huaxing Science and Trade Co., Ltd. is a professional company that acts as an agent to sell high-end analytical instruments from countries such as Europe, America, and Japan. It was established in 1999 and has multiple departments including sales, technology, after-sales service, business, finance, administration, and personnel. The company mainly acts as an agent for the sales of products such as Elementar from Germany, NIC from Japan, CITL from the UK, and Eldex from the US. Beijing Zhongke Huaxing Science and Trade Co., Ltd. has participated in the development of various national and industry standards, and its agency products have been continuously shortlisted for the bidding of special instrument and equipment procurement projects by the General Administration of Quality Supervision, Inspection and Quarantine of China for many years. The company has a professional sales team, highly skilled technical support, and experienced after-sales service personnel to provide users with professional and satisfactory products and services. Elemental, a German company, has over 110 years of professional experience in the field of elemental analysis, focusing on manufacturing professional elemental analysis instruments and renowned internationally. Elementar has now become synonymous with professional elemental analyzers. NIC Japan is a professional manufacturer of various mercury measuring instruments, with a research and development and production history of over 40 years. The product can meet various mercury measurement needs of users. CITL in the UK is a company that develops and produces cathodoluminescence, with multiple independent technologies that can be used in conjunction with its own energy spectrometers and spectrometers. ELDEX's high-quality precision metering pumps are widely used in high-pressure liquid chromatography and high-precision testing equipment worldwide.