?Location: LERDN factory is located as part of the Shanghai National High-tech Industries Base in SHIBEI INDUSTRY PARK (login in), LERDN has established representative offices in the USA and HONGKONG, and signed with five countries' agents as sole agents at a national level. In China, LERDN has seven branches and fifteen sole agents at the provincial level. We do our best to provide high-speed service and high-quality products to our customers.

?Products: LERDN was established in 2004 and is a growing and dynamic young company. LERDN endeavors to research and manufacture electric safety protective products, which include two series: Lightning and surge protective devices, and electric fire monitoring systems.

?Applications: LERDN has various products which include a portable SPD tester, a power supply SPD, a control signal SPD, a computer network SPD, an electric fire monitoring system, etc. These products provide reliable electric safety protective solutions to the mobile communication industry, the railway industry, the petrochemical industry, the electric power industry, new resource industries of solar and wind, etc.

?Intellectual Property: LERDN appreciates intellectual property rights and owns a variety of patents in the country of origin (China) by way of independent research.

?Quality: LERDN provides a five-year product quality guarantee and high-quality service globally. LERDN owns comprehensive inspection equipment, which includes: Stimulant lightning current impulse test stand, network analysis meter, SPD performance tester, on-line aging test stand, etc. LERDN strictly carries on ISO 9001 and ISO 14001 management systems. These products adhere to RoHS standards. During research and manufacture, LERDN actively reduces its environmental impact, emphasizes safety, and pursues sustainable development through constant improvement.

?Cooperation: In building an international brand of "LERDN", we wish to cooperate with more and more partners at the global level, and share our high-quality products and professional technology. By providing more solutions and product manuals in multiple languages, we will assist you to improve market development.