Engineering Case Studies — How WUGONG Builds Its Own Products

The problem with conventional smart toilets is that they depend on building water pressure. On a high floor at 7 a.m., in older housing with scaled pipes, or in any low-pressure market, a pressure-dependent toilet stops flushing properly — and that single failure becomes the dominant field complaint. The second failure mode is electronics sitting in water.

Our smart-toilet engineering decouples the flush from the supply line. Flush energy comes from water stored in a sealed tank and driven by an axial-flow pump, not from the building mains. The supply line only has to refill the tank slowly, which even low pressure can do. This is covered by a patent cluster we own: the axial-flow flushing device (**CN220318693U**), the axial-flow pump pipe (**CN222206645U**), the pressure-balanced closed water tank (**CN220247104U**), the closed tank hidden inside the ceramic body (**CN220318691U**), sealed-tank flushing (**CN117721886A**), and the integrated heating-and-water-distribution module (**CN118482474A**).

Validation covers flush-cycle behavior across pressure bands, sealing, and electrical safety (IPX4 design for the wet bathroom envelope). The engineering outcome is a toilet that flushes the same way regardless of supply pressure.

A premium smart shower is an integration problem: reliable thermostatic control, sealed electronics, multiple outlets, and a service architecture that does not require breaking tile. The programs that fail usually fail at the water-to-electronics boundary.

Our shower system is built around a smart ceramic valve core — high flow, scale-resistant, long lifespan — with independent cold and hot water shutoff so there is no cross-flow, a sealed and potted electronic controller, and multi-outlet distribution (hand shower, rain shower, body jets, bathtub filler). The engineering is published as patent **CN121154031A** (published 2025-12-19), covering independent cold/hot control, mixed-water routing, multiple distribution channels, and electronic rotary switch valves.

Reference validation targets include an IP68 sealed controller, ±0.5°C temperature control, and a 10-minute quick-swap service concept in which the controller and valve are modular and reachable. The outcome is precise thermostatic control that is also serviceable.

The problem with traditional flushing is that it is slow, loud, and pressure-dependent. The engineering goal for our 5th-generation system was a flush that is fast, quiet, and independent of supply pressure.

The system uses a low-speed direct-drive motor (55W) paired with a large-caliber Φ40mm inner chamber and an optimized sealed tank. The reference performance is an opening flow rate of 70L/min and a full tornado flush in about 4 seconds — roughly 5x faster than a conventional ~22s cycle — with a 1.5L water line and 100,000-cycle durability. The program is backed by 8 patents spanning utility models, design, and one invention patent.

The outcome is a flushing system that is quiet enough for hotel and residential night-time use, fast enough to feel instant, and pressure-independent.

Floor drains fail in three ways: sewer odor backflow when there is no flow, slow drainage when there is, and insects entering through the drain. Most fixes solve one of these at the cost of another — a strong seal that drains slowly, or a fast drain that cannot be cleaned.

Our F10010 floor drain treats the removable cleaning structure as the core function, protected by invention patent **CN110629859B** (priority 2019-09-22, granted 2021-01-15) and a matching design patent. It combines a one-way anti-odor and anti-insect seal with a large-caliber drainage path around the removable cover, so cleaning access does not cost drainage speed. The result is a drain that cleans in place, drains fast, and seals against odor and insects.

---

Each of these is a WUGONG-owned product program. If you are evaluating us for an OEM/ODM project, the strongest next step is to ask for the artifact behind any claim above — a patent number, a specification, a test plan. Contact **sales@xm5e.com**, or see our manufacturing capabilities and the product pages.