This is from Yichen Technology Development (JCG) company in Shenzhen China, a manufacturer of computer hardware products including graphics card and wireless router, wireless USB netcard, switch, etc.Our products include full range of Graphics card.Nvidia serial : GTS250 GT220 G210 GF9800GT GF9600GT GF9500GT GF9400GT GF9300GS; ATi serial : HD4830 HD4670 HD4650 HD4350 HD3850 ATi3650 ATi9550 ATi9200What's more we also produce full range of network products : MODEM, WIRELESS ROUTER, WIRELESS ADAPTER, ADSL 2+Router, SOHO SWITCH, HUB, etc.For more information, Please visit our homepage : ***** (pc products), *****(network products)