The company's customers said on 3 June that Polymir had taken off-stream its LDPE production for the scheduled maintenance.
The maintenance works were carried out in two stages with some of the production resuming operations on 17 June. The entire complex had resumed operations by 5 July.
The plant's production capacity is 130,000 tonnes/year.
According to MRC, June LDPE output at the Belarusian plant was 2,700 tonnes, compared to 5,000 tonnes a month earlier.
The plant's overall LDPE production reached 28,500 tonnes in the first half of 2017 versus 62,800 a year earlier.
Polymir (part of JSC Naftan) is Belarus' largest petrochemical company, producing a wide range of chemical products, such as low density polyethylene (LDPE), acrylic fibres, products of organic synthesis and hydrocarbon fractions.
MRC, a partner of ICIS, produces polymers news and pricing reports from Russia, Ukraine, Belarus, Uzbekistan and Kazakhstan.