Pyongyang, November 13 (KCNA) -- Various units of the national economy in the DPRK have made successes in the adjustment and reinforcement project aimed at improving the productivity.

The Ranam Coal-mining Machine Factory established a process for producing alloy steel which is of great significance in putting the machine-building industry on a higher Juche basis.

The Songchongang Electric Appliances Factory built a serial production line of reluctance motors for tram car and has taken measures for its normal operation.

The Chongjin Railway Bureau and some other railway bureaus put their efforts into technical upgrading of equipment for producing concrete sleepers to raise their output and quality. -0-