All water-contacting fittings (flanges, joints, gaskets) are preferably made of 304 stainless steel/food-grade nitrile rubber to avoid rust and water quality pollution, suitable for drinking water/secondary water supply scenarios;
Electrical auxiliary materials must be flame-retardant and national standard products; the waterproof grade shall be increased for humid/outdoor environments, and no cut corners are allowed for grounding materials;
Gaskets and rubber rings must be precisely matched with equipment/pipeline calibers, and non-standard parts are prohibited for replacement to prevent water leakage;
Quartz sleeves and lamp tubes are fragile items, which shall be stored separately before installation, protected from collision during construction, and wiped with dust-free rags.