KATHMANDU: Forty eight out of the 55 LPG industries operating in the country have not yet taken the Nepal Standard certification. Although the government has made the NS certification mark mandatory for all LPG bottlers, 48 companies have not been certified. Among the few that have the certification are Manoj Gas Industry (Birgunj), Shree Krishna Gas Industry (Dhading), Saibaba Gas Industry (Dhading), Nepal Gas Industry (Balaju), Janaki Gas Industry (Nawalparasi), Metro Gas Industry (Dhading) and NL Gas Industry (Birgunj). RSS