 AIR LIQUIDEADR OTCMKTS:AIQUY was upgraded by Zacks Investment Research from a hold rating to a buy rating in a report released on Monday, Zacks.com reports. The brokerage presently has a 32.00 price target on the basic materials companys stock. Zacks Investment Researchs target price would indicate a potential upside of 10.92 from the companys current ... 