Established in 1992,Changzhou Huada Kejie Opto-Electro Instrument Co., Ltd (HDKJ) is a high-tech enterprise, specialized in the field of optical-mechanical-electrical integration technology, which in long-term focusing on laser measurement and control system, and intelligent engineering control system products development and manufacturing. Through tracking closely the international advanced technologies of light perception, laser measurement and control, digital intelligent sensor and others in sustainable innovation and development, HDKJ is mainly doing application and service for digital construction system BIM and ecological chain, and providing solutions for industrial intelligent equipment. After more than 30 years of hard work, HDKJ has become one of the leading enterprises in the national laser measurement and control, and its sensor technology field. In 2008, as one of the first batch,HDKJ was granted the title of "National High-Tech Enterprises" according to the new standards. In 2009,HDKJ undertook the project of establishing "Enterprise Academician Workstation" assigned by Jiangsu Provincial Science and Technology Department. In 2013,HDKJ was approved to establish "Jiangsu Engineering Technology Research Center" by Jiangsu Provincial Science and Technology Department . In 2022,HDKJ was granted the title of “Provincial Specialized, Special and New Small and Medium-sized Enterprises" by Jiangsu Provincial Department of Industry and Information Technology. After a long time of development,HDKJ has strong technical development capabilities and strength with a talent team of optical-mechanical-electrical integration comprehensive and professional technology development and a close cooperation talent team of international and domestic industry experts . The staff members in charge of S&T account for more than 10% of the total number of employees. Every year, HDKJ invests a lot of funds in product research and development . In terms of products research and development for laser tools, measurement and control modules, sensors and intelligent hardware, infrared scanning, measurement and control products etc. HDKJ is adhering to the high-grade, high-quality, green carbon neutral and user-centered product development strategy, which obtaining obvious technical advantages. Following the service concept of innovation, truth-seeking, high quality and simplicity,HDKJ has won the favor of many well-known customers and users at home and abroad. After absorbing venture capital and M&A, HDKJ has become an important part of the listed company of “Hangzhou Greatstar Industrial Co.,LTD” in high-tech development. At present, with a total area of about 30,000 square meters for production and supporting facilities, HDKJ has three manufacturing bases respectively located at Changzhou in China, Haiphong in Vietnam and South Cambridge in Vietnam. The annual production capacity is reaching roughly 1.5 million sets of laser line products/year, 80,000 units of laser leveling instrument products and 400,000 units / year of rangefinder products, which about 95% of the products are exported to Europe, America, Japan and other overseas markets, with good product performance at international advanced level. HDKJ has two subsidiaries including "Hong Kong International Huada Kejie Opto-Electro Instrument Co., Ltd. " and "Changzhou Huada kejie Engineering Machinery Co.,Ltd ",and a joint venture with "German Stabila Messgeraete Gustav ulrich GmbH", "Changzhou Stabila Laser Instrument Company Limited". HDKJ also has market technical application teams working in the Netherlands, Japan, Australia and North America. Over the years, HDKJ has been following the goal of innovation-driven development strategy to undertake a number of provincial and municipal science and technology projects. So that, HDKJ has been granted many honours and titles, such as "National Intellectual Property Demonstration Unit", "Jiangsu Province Five-Star Cloud Enterprise" "Municipal Gazelle Company" and also granted systems certificates of "ISO 9001:2015", "ISO14000:2015", "Intellectual Property Standard" etc. In 2022, the company was awarded the "Changzhou May Day Labor Award" by the Changzhou Federation of Trade Unions for employees with united and harmonious relationship . HDKJ has laid a solid foundation for the company's high-quality development.