Our buyers have stayed with us for 12 years 12 years of specialized meters Patent and CE certificate OEM services available Guangzhou ETCR Electronic Technology Co., Ltd. was established in 1999. Our factory is located in Guangzhou, Guangdong, South China. We are a high-tech manufacturer specialized in non-contact and intelligence electronic testing meters. Our products can be widely used in power system, petroleum, chemical engineering, telecommunication, meteorology, military, railway, ...