we are one of the biggest producers of various computer desktop/table cases and power supply in china, with a registered brand zhongchang. * computer cases: 1) more than 300 models 2) classified into three grades:normal grade/middlegrade/high grade. based on different consumption habits, our products can meet different markets' requirements. 3) 300,000 whole sets per month. * power supply: 1) based on the prices, power supply with different watt. 2) power supply is with fcc/ul/ce/csa/saso/cb approal 3) 300,000 whole sets per month. if you have interesting in it, pls lading on website or writte e-mail to me, i will try my best provide you requests.