A local company requires 100 sets of escape chutes (at a cost of $4,545 (US Dollars) each for high-rise building evacuation for the Vietnam Ministry of Public Security. They must meet these specifications:

 

• Modular and easy to deploy and use when there is no power supply

• Double entry

• Possible for evacuation from the height of ¡Ý 20m

• Length of the tube ¡Ý 30m

• Materials should be heat, water, wear & tear resistant

• Chute¡¯s working gradient of 450

• Sliding speed of 2-2.5m/second