"SANYUEN"标准传递箱，避免在传递货物时，将有尘埃的空气带入无尘车间，它设有响号和电子联锁系统，确保控制尘埃。

     In clean rooms the dust generated by people and materials make up the largest source of contamination. The transportation of materials in and out of such rooms should therefore be accomplished with the least possible human movement. Pass boxes are used this reason.