... strength and time; (3) suitable for cement, concrete and cement products Digital Control Cement Concrete Standard Curing Box (NC Maintenance Box)SHBY ... , invanability condensation time of the specimen such as cement, concrete, cemnet products etc.Main technical parameters:Operating voltage220 ... 580×160mm×6(layers)Model SHBY-40B digital control cement concrete standard curing box (NC maintenance box) is ...