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www.huaxianglc.com shandong laiyin optoelectronics technology co., ltd. specializes in the production of soil measurement instruments, soil fertilizer instruments, soil measurement formula fertilization instruments, soil heavy metal detectors and other instruments. it is a high-tech enterprise committed to the development of agricultural informatization. it uses information technologies such as the internet of things and cloud computing in the agricultural field to promote agricultural modernization. 2025-03-17