When specifying storage modules, check five things: vertical and lateral load capacity, virgin vs recycled polypropylene, wall thickness uniformity, oxidation induction time and 50-year creep deformation. Xihai offers grades from 350 to 700 kN/m² with 3.75–5.00 mm average wall thickness and third-party testing support.
Tropical climates deliver intense concentrated rain. Re-check catchment area and storage volume against local rainfall formulas, then set first-flush and filtration grades. Prioritise reuse for cooling tower make-up, irrigation and road washing to cut mains water use.