HITECH (HK) CO., LTD was established in 1992 and to-date it is considered as a major world wide player within the surge protection industry. With factories through China all our designs are done in-house by our highly recognized team of engineers and our state of the art testing laboratory that includes Surge generators for 8/20 (100KA), 2ms (2000A), 10/350us (20KA), 4/10us (100KA) & 10/1000us, and TOV tester, Thermal stability tester, SPD on-line tester and Aging tester just to name a few. Few companies world wide have such facilities to guarantee full specification and performances on all their products. Our wide range of surge protection products assures you a one stop shopping location for all your surge protection need and professional advice. JoyOne Sales Department E-mail: xxxxx