Shandong Holder Electronic Technology Co., Ltd. is a testing instrument manufacturer with independent research and development. The manufacturer has its own biological laboratory, chemical laboratory, software product design and development team, strategic cooperation with a number of scientific research laboratories, and a number of invention projects and copyright certificates. The main business of the company is to research, develop, produce and sell instruments and equipment applied to water quality detection, agricultural ecology, food quick inspection, plant physiology, meteorological environment, intelligent Internet of Things, etc., build a complete product system in multiple related fields, combine photoelectric technology with the Internet of Things and cloud services, provide users with more extensive applications and in-depth services, and provide agriculture, forestry, scientific research, animal husbandry Comprehensive solutions are provided for related fields such as meteorology, water conservancy, food and medicine, and environment. Company and Quan