Our company, Hunan Yida Electronic Co., Ltd. is a professional manufacturer mainly specialized in high efficient electronic ballasts in Changsha city, Hunan province of China . The fluorescent lamp ballasts our company produced are now replacing the old conventional electro-magnetic ballasts, It has the characteristics of energy saving, low voltage igniting, high power factor, Low harmonic, long life, flicker free and no noise, easy to install and use etc. The products technical index has fully complied with the national standard of GB19510.1-2004, GB19510.4-2005, GB17625.1-2003,and passed 3C , CE, FCC, UL and TUV certificate. The exact products photos and qualifications, pls link our website. We also can make the products according to your request.