I-Oxyzen esebenzayo Isikhokelo soKhetho: Izixhobo eziphathekayo I-Q-AO Esebenzayo ye-Oxygen Colorimeter ephathekayo T-6800 Multi-parameters Portable Colorimeter I-Analyzer ye-Intanethi I-K600 Water Online Analyzer (K-Y03) Izixhobo zaseLab Z-T700 Intelligent Multi-parameters Analyzer Z-D700 Multi-parameters Analyzer