For hotels and motels located near noisy streets, highways, train tracks, airports or urban city walks, keeping external noise from penetrating into what should be the quiet, peaceful sanctuary of the guest room might seem an impossible task. 
Noise can make it difficult for guests to sleep soundly, if at all, during the night or for needed daytime naps.  For those conducting business in their hotel room or simply relaxing, excessive noise can lead to frustration and frayed nerves. The fall-out is undeniable: unhappy guests, frequent requests to change rooms, customers that vow never to return, customers demanding a refund or negative online social reviews.  The negative impact to a hotel’s bottom line can be significant and result in lower bookings and a substantial decrease in revenue if the noise problem persists.

For this reason, we attach importance to sound insulation and divide it into three categories, which are: