Modular &
Prefab Buildings

Zhongding House

Flat-pack container houses, folding container rooms, quick-splice modular rooms, K-type site cabins, expansion boxes, feature retail units and steel-frame sheds under the brand 中鼎房屋 / ZHONGDING HOUSE. Built by 潍坊市中鼎钢结构有限公司 (Weifang Zhongding Steel Structure Co., Ltd. on its own brochure and ISO certificates; USCC 913707026996905938), a limited company registered 2010-01-11 in Weicheng District, Weifang, Shandong, registered capital RMB 10 million with RMB 500,000 paid in. Registry read 2026-09-29: status open; scope covers processing and sale of steel frame structures, composite panels and colour steel sheet, colour-steel houses and canopies, steel-structure engineering construction, and import and export of goods and technology; 20 insured staff at this entity. Documents read page by page: steel-structure specialist contractor licence D237285358 grade 2 valid to 2029-12-17 (publicly checkable at jzsc.mohurd.gov.cn), safety production licence, ISO 9001/14001/45001, and third-party test reports on an assembled container house 6055x2990x2896, Q235B C-section steel and a metal-faced insulated sandwich panel to GB/T 23932-2009. Catalogue claims, unverified: four production bases, 800+ staff, 80,000 m2, annual output value RMB 100 million, 700+ projects with subsidiaries of Chinese state construction groups, movable houses 5,000 m2/day and 100+ flat-pack sets/day. At least two of the four bases are separate legal entities (Changle Dingsheng Steel Structure Engineering Co., Ltd. and a Bairui integrated-house branch in Guangdong), so the contracting entity must be confirmed. Risk scan: four environmental-protection penalties and one historical administrative penalty. The catalogue still describes the licence as grade 3 and gives two founding years (2006 and 2001) that differ from the licence date. A Saudi Arabian plant was mentioned verbally at introduction and appears nowhere in the 60 pages supplied. Open checks: per-model specifications and load tables; fire classification of the panel to EN 13501 or the buyer's market standard; EN 1090 CE marking for structural steelwork; customs registration number.