Kester, Inc. is a leading global supplier of high-performance interconnect materials and services for electronics assembly and micro-component packaging. Headquartered in Itasca, Illinois, USA, the company was founded in 1899 and has over 125 years of experience in soldering technology. As a division of Illinois Tool Works Inc. (ITW), Kester benefits from the resources of a diversified Fortune 200 industrial enterprise. Its core business focuses on solder materials, including solder wire, solder paste, liquid flux, bar solder, and solder preforms. Key product lines include no-clean solder pastes like Kester 245, Kester 275, and Kester 295, water-soluble pastes such as Kester 280, and high-reliability wire solders like the classic Kester 44 and Kester 285 series. The company also offers specialty alloys for low-temperature and high-temperature applications, lead-free solutions, and advanced fluxes. Kester maintains a global R&D footprint with laboratories in the United States, Singapore, Germany, and Japan, enabling rapid development of environmentally friendly and high-reliability materials. Its products serve diverse industries, including automotive, aerospace, consumer electronics, telecommunications, and industrial equipment. Kester is recognized for its consistent quality, technical support, and innovative solder technology, holding multiple certifications such as ISO 9001 and IATF 16949. The company's commitment to R&D and its extensive distribution network make it a preferred partner for electronics manufacturers worldwide.