Beijing Wanshunhua Technology Co., Ltd. was established in September 2005. It is an independent innovative private technology professional enterprise that integrates the research and development, intelligent manufacturing, and sales of new products in high-tech fields such as optoelectronic sensing and fiber optic sensing; The company is located in the ancient capital of Beijing, the center of modern technological innovation; We have a complete set of technology for both the GDY series photoelectric liquid level sensor products and the GXY series fiber optic liquid level sensor products. Our main products include GDY series photoelectric liquid level switches, photoelectric liquid level controllers, and photoelectric liquid immersion sensors; GXY series fiber optic liquid level monitoring instrument, fiber optic oil spill probe/probe rod, fiber optic liquid level sensor; GD series photoelectric level sensor; GX series fiber coupled sensor.