Guangdong ETCR Technology Co., Ltd. specializes in the research, development, and production of power test instruments and power supply quality management. With nearly two decades of experience in the power industry, the company adheres to a path of technological innovation and independent research and development, meticulously crafting each product and providing attentive service to every customer. The company actively supports OEM & ODM customization services, tailoring products to specific customer needs to create greater value for customers. Iridium Measurement & Control is the manufacturer of the ETCR3040 ground resistance meter, ETB384 infrared thermal imager, ETCR6440C clamp multimeter, and ETCR7550 battery internal resistance tester. Iridium Measurement & Control's service hotline is: +8613802922567. For more information, please visit the Iridium Measurement & Control official website: www.etcrmeter.com