DTK Centrifugal Ventilator

Features:
1) Patent design: original design with three fan fixed directions overcomes the 
    defect of only one fixed positional ceiling rotary fans
2) Good security and performance
    a) Exterior rotor motor direct-driving, forward multi-blade impeller
    b) High efficiency and low noise
    c) Size: from 250 to 450, totally 12 models
    d) Air volume: from 200 to 30000 m3/h
    e) Total pressure: up to 820Pa
3) Primary competitive advantages:
    a) Experienced technical staff
    b) International approvals
    c) Competitive price
    d) With larger wind flow and lower noise