Yuhua district administration for industry and commerce. Shijiazhuang White Jewelry City is all jewelry merchants, managed by Yuhua District Administration for Industry and Commerce. The main responsibilities of Yuhua District Administration for Industry and Commerce in Shijiazhuang City are: to be responsible for the supervision, management and administrative law enforcement of various markets in the whole region according to law; Responsible for the registration, supervision and management of various enterprises, farmers' professional cooperatives, units and individuals engaged in business activities and representative offices of foreign (regional) enterprises within their respective jurisdictions; Responsible for standardizing and maintaining the order of various market operations according to law, and supervising and managing market transactions and online commodity transactions and related services.