Let me verify the relationship between Tianjin Pool & Spa and Wybotics, and check for the parent company's listing.
Let me verify the relationship between this entity and Wybotics/Winny, and the nature of its business.
Tianjin Pool & Spa Corporation is a privately held California corporation headquartered at 2701–2711 Garfield Avenue, Commerce, CA 90040. It was registered with the California Secretary of State on January 28, 2005 (entity no. C2726155) and remains active. Its registered business type is "sales of pool & spa products," and it also operates as Pooline Products Manufacturing. Public records list Shuozhe Wang as CEO, CFO, secretary, and director. Size data are limited: a 2021 federal PPP filing reported seven employees and identified the company as a sporting/recreational goods merchant wholesaler; no revenue figures are publicly reported.
Products / operations. Customs and licensing records indicate a US importer and wholesaler of pool and spa maintenance goods — calcium hypochlorite (pool chlorine), leaf skimmers, pool cleaning poles, vacuum heads, hoses, brushes, and thermometers. It is an operating company, not a patent-assertion entity, though its operations are distribution/import rather than manufacturing.
Patent-litigation posture. The structured data show one tracked case, as a defendant, and zero as plaintiff — the profile of an operating company being sued rather than an NPE asserting a portfolio. The single tracked suit sits in the U.S. District Court for the Central District of California, not a plaintiff-friendly venue such as the Eastern District of Texas.
Notable case. In Zodiac Pool Care Europe et al. v. Wybotics Co., Ltd. et al., No. 2:22-cv-05271 (C.D. Cal., filed 2022-07-29), Zodiac sued Tianjin Pool & Spa alongside Wybotics Co. Ltd. (f/k/a Tianjin Wangyuan Environmental Protection and Technology Co., Ltd., d/b/a Winny Pool Cleaner) and the Aiper entities over robotic pool cleaner patents. The same complaint spawned USITC Inv. No. 337-TA-1326, in which Tianjin Pool & Spa was named a respondent; the ITC terminated the investigation as to it and Wybotics on partial withdrawal in March 2023. Wybotics later filed for a Hong Kong IPO as WYBOTICS Co., Ltd. (Tianjin) and disclosed 2025 revenue of RMB 812.2 million. Public sources do not confirm the ownership relationship between Tianjin Pool & Spa and Wybotics.