I need a local assistance in shenzhen - China

Hi I'm in Brazil. In the month of November will receive a batch of about 100 equipment manufactured by Bitmain, Antminer S7 model. In Shanzhen - China Each device weighs 8.8 pounds and has measures 11.8 x 6.1 x 4.8 inches I need a sales price analysis of such equipment at the site of Shenzhen market. I also need to know how much it costs to rent a space in which these devices can be tested and reviewed (I will send a technician to run this service) as well as a storage until they are sold.