RS ISO 4427-1: 2019 PLASTICS PIPING SYSTEMS FOR WATER SUPPLY AND FOR DRAINAGE AND SEWERAGE UNDER PRESSURE — POLYETHYLENE (PE) — PART 1: GENERAL
25,500.00
38
969,000.00
2
Rwanda Standards
RS ISO 24510: 2007 ACTIVITIES RELATING TO DRINKING WATER AND WASTEWATER SERVICES — GUIDELINES FOR THE ASSESSMENT AND FOR THE IMPROVEMENT OF THE SERVICE TO USERS
