At present, the shutter doors are very popular with the roller shutters divided into 3 systems, which work will have different properties.

1. Manual system suitable for doors with a width of not more than 3.50 meters and a height of not more than 3.50 meters. It is suitable for warehouses, factories, commercial buildings and residences. The work uses a spring system with manpower to turn on-off.

2. Electric motor system suitable for doors with a width of not more than 10 meters and a height of not more than 10 meters. It is suitable for residences, companies, department stores, buildings, warehouses, factories and government offices, etc. Electric motor control system on-off by using a push switch or remote control that supports a signal about 5-10 meters.

3. Chain hoist system suitable for doors with a width of not more than 7 meters and a height of not more than 7 meters. It is suitable for warehouses, buildings and factories. The work will use a chain hoist system with manpower to open and close the chain.

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