1.Guangzhou TONGTONG Digital Technology Co., Ltd. is located in the largest electronic market in Tianhe District, Guangzhou, where 85% of Chinese users wholesale electronic products. Our products are sold worldwide. We provide various motherboards and laptops from renowned brands with excellent cost-effectiveness: computers, laptops, tablets, computer accessories, and more. The brand has lenovo lenovo,HP,DELL,acer,Apple, ASUS,ThinkPad, Microsoft, MSI and so on.2.We are also have the 30 years' experience professional manufacturer of various digital instruments of digital multimeter, clamp multimeter, insulation resistance meter, capacitance, resistance and inductance measurement meter, infrared thermometer, etc.A. Professional and experienced engineers Our engineers have been in this industry for over 40 years. Many measuring instruments on the market were first developed by our engineers, and many patented products have been obtained.B. Quality is our culture:we have got CE,ROhs cerificate for our products. C. Small MOQ, we can accept order start from 1pcs.D. Fast delivery and full stocks - we can delivery the products within 2 hours.E. We have more than 60 agents in every provices in China, now we are devoloping the foreign agents, welcome to join in us. Make measurement simpler and safer , more efficient.F. Our products have been exported to more than 20 countries such as the united States (J.J KENT...),Argentina (BREMEN...)Britain(),Germany(HELIOS...), Italy(TECNOGAS), Canada(MDS),Australia(TRONTEK) Japan (KAISE),IRAN (RAD)and so on.Hope to have a long business with you. Welcome to our factory and office in China as a friend.