Shenzhen Techwin Lightning Technologies Co., Ltd is a professional and high-tech enterprise engaged in R&D of surge protective device, which is a leading provider of lightning solutions in China. Our products are fully complied with the latest international and domestic standards and have over 10 technical patents. Our innovative products- SPD for AC/DC power, signal, RF, Photovoltaic widely apply in telecom, power, railway, intelligent transportation, CCTV and solar project.Advantage of Techwin:1. Strong R&D capability: advanced product and technology leading the industry. OEM and ODM are available.2. Perfect SPD solution, covering industries such as telecommunication, power systems, safety & security, PV solar energy, and other mission-critical systems.Rich practical experience Industry proven with worldwide customers and installations.3. Good after-sale service: All Techwin SPD are guaranteed with 5 years warranty. During the guaranteed period, Techwin support maintenance or replacement for free.4. Various test equipment:  Techwin has its own lab and many types of testing equipment, such as high-temperature tester, lightning unit testing, network analyzer, crystalloid tester, aging testing, etc. surge generator with 1.2/50& 8/20s waveform, 10/350s waveform.5. A number of patents and certificates: Techwin has CE, RoHS, UL, TUV, CQC, ISO9001, etc international certificates and more than 10 technology patents.