Kathmandu, June 27 -- The Nepal Bureau of Standards and Metrology revoked the production permits of two cement factories and demanded clarification from two others for disregarding its directives.

Reliance Supertech Cement of Bara and International Cement of Parsa lost their production permits for continuing to sell their products even though their licences had been suspended for an earlier violation, the bureau said.

Their permits were cancelled as per the Nepal Standards (Certification-mark) Rules, 1983, rule 16. Reliance produces Portland slag cement while International Cement makes ordinary Portland cement.

The bureau, which is the monitoring and regulatory body, demanded clarification from Agni Cement of Rupandehi and Sarbottam Ce...