The processing and manufacturing sector, responsible for a large part of domestic industrial production, reported IIP reduction of 4.8 per cent while the IIP of electricity production and distribution fell by 3.5 per cent.
Meanwhile, the IIP of the water supply and waste-sewage treatment sectors rose by 1.6 per cent year on year.
Many industrial products had a strong reduction in output, such as automobiles (38 per cent), sugar (30.4 per cent), motorbikes (22 per cent), liquefied petroleum gas (21.2 per cent), coal (18.5 per cent), milk powder (18.4 per cent) and raw steel (15.1 per cent).
Other products with decreased outputs included televisions (14 per cent), animal food (12.7 per cent), casual clothes (12.1 per cent), fertiliser (11.5 per cent), electric equipment (11.1 per cent) and crude oil (10.7 per cent).
However, some industrial products achieved growth in production, including metal ore (34.3 per cent), steel bars and steel angle bars (23.5 per cent) and mobile phones (10.4 per cent).
GSO officials said the reduction in industrial production in January was temporary due to the long Tết holiday.
Production was expected to recover soon because, in January, the number of labourers in industrial enterprises increased by 0.5 per cent year on year, they said. VNS