Features: ◎ It can carry out two functions (Roll and Swing), adapted to mixing of blood samples, adhesive materials and Liquid - solid suspensions. ◎ Driven by High performance DC declaration Motor, Running stable, No noise, Long lifetime. ◎ 7 rolls, compact structure makes it less space occupation. adapted for obvious environment. ◎ Reasonable space between the rolls makes it fit for different size tubes. ◎ According to actual requirements, we can supply coratationreverse cross model, The roller can be lengthened within a certain range to fit for more tubes.