The Chinese layer at /zh/ is written for the buyers who actually read Chinese: cross-border e-commerce sellers on Amazon, AliExpress, Temu and Shopee, trading companies, sourcing agents and overseas Chinese importers. It is not a translation of the English pages but a rewrite that uses the vocabulary those buyers search with, including 花洒, 洒头, 手持花洒, 顶喷, 滤芯 and 源头厂家.
All 30 country sourcing pages now have a Chinese version. Each one names the thread standard commonly used in that market, the regulatory route, the retail and marketplace channels, the port and sea-transit expectation, and a local-vocabulary table that maps the words buyers in that country use to their English equivalents. Country facts carry the same hedge as the English pages: confirm with your customs broker or importer.
Chinese pages declare hreflang zh and zh-Hans and appear in their own child sitemap. Inquiries can be written in Chinese; the factory replies in Chinese or English, and specification documents are supplied in English.