Engaged in indoor ice-skating rink and skiing hall constructing for more than 15 years. Has rich practical experience in construction of international standard icer-rink, involved in ice- skating rink more than 130 sets and ski resorts more than 10 sets (including the design, construction, supervision, training etc.)

Bort Zigterman

Engaged in indoor snow making more than 23 years, and invented the snow systems—PowderStar- S6 and  snowing  machine.  participated  in the  design  and construction  of indoor ski resorts for more than 20 sets, and other commercial and industrial snowing projects more than 50 sets.

Ralph Ressel