# ZolinWorks > Factory-direct manufacturer of HF-welded flexible water tanks based in Hangzhou, China. Supplies B2B buyers globally with collapsible PVC-coated water storage tanks for construction, agriculture, aquaculture, and emergency water projects. No retail sales — all orders are project-based with custom fittings and MOQ confirmation. ## Product Lines - [ZolinFlex Cube Water Tanks](https://zolinworks.com/collections/zolinflex-cube-water-tanks): Collapsible cube-format PVC-coated water tanks, 1,000L–5,000L. HF-welded seams, project-specific fittings, bulk export supply. - [ZolinFlex Pillow Water Tanks](https://zolinworks.com/collections/zolinflex-pillow-water-tanks): Foldable pillow bladder tanks, 900L–60,000L. Heavy-duty PVC-coated fabric, HF-welded, freight-efficient. - [ZolinAg Open-Top Tanks](https://zolinworks.com/collections/zolinag-open-top-tanks): Round open-top aquaculture tanks for fish farming and biofloc systems. - [ZolinFlex Folding Frame Water Tank · 1,000L](https://zolinworks.com/products/zolinflex-folding-frame-water-tank-1000l): Portable frame tank for rapid site deployment. - [ZolinFlex Onion Water Tank](https://zolinworks.com/products/zolinflex-onion-water-tank): Self-supporting onion-style tank for open-air water storage. ## All Products - [All Products](https://zolinworks.com/collections/all-products): Full catalogue of ZolinWorks flexible water tanks. ## Company - [About ZolinWorks](https://zolinworks.com/pages/about): Manufacturing background, HF-welding process, certifications, and factory capabilities. - [How We Work](https://zolinworks.com/pages/production-technology): Production technology, quality control, and OEM process overview. - [Applications](https://zolinworks.com/pages/application-environment): Use cases — construction sites, agriculture, emergency response, aquaculture, and industrial water storage. - [Contact / B2B Inquiry](https://zolinworks.com/pages/contact): Project inquiry form. Buyers submit capacity, application, and fitting requirements for a quote. ## Resources - [Flexible Water Tank Buyer's Guide](https://zolinworks.com/pages/flexible-water-tank-guide): Guide to selecting flexible water tanks by capacity, material, and application. - [Pillow Tank vs Cube Tank](https://zolinworks.com/pages/pillow-tank-vs-cube-tank): Comparison of pillow and cube format tanks for different project types. - [Resources Blog](https://zolinworks.com/blogs/resources): Technical articles, deployment guides, and product comparisons.
