Guangzhou Dongru Electronic Technology Co., Ltd. was established in 2010 and is a professional manufacturer of precision testing instruments that integrates research and development, design, production, sales, and service. Our product series has a complete range of models to meet different user needs. Our main products include coating thickness gauges, paint thickness gauges, ultrasonic thickness gauges, transmittance meters, glossometers, transmittance testers, haze meters, and other instrument products.