All enterprises and establishments are classified according to the Establishments Census 2007, which works in agreement with (ISIC - 4).
Industrial survey covers all establishments of the following main activities:
1. Mining and quarrying (05-09).
2. Manufacturing (10.33).
3. Electricity, gas, steam and air conditioning supply (35).
4. Water supply and sanitation activities and waste management and treatment (36-39)
Source of information
The enterprise owner or general manager
Imputation and derivation
Imputation
The interviewer and supervisor firstly edit technically the questionnaire according to editing rules.