We are one of biggest factories to make pc case and power supply in China , our pc case has common pc case , gaming pc case , transparent pc case , aluminium pc case , industrial pc case and server etc . About Power supply , we can make them as your requirement from 180W to 400W . About mouse , keyboard , speaker , they are not our products , but we have some good factories to cooperate . Welomce you to visit our facoty if you are in China