Chow Tai Fook's broken necklace is guaranteed by the state. Chow Tai Fook is a well-known jewelry brand, and the jewelry it provides is generally guaranteed. Chow Tai Fook's jewelry products will provide corresponding warranty service when they are sold, and the warranty period is generally one year. If the necklace you bought is broken or has other problems, you can take the purchase voucher and warranty card to Chow Tai Fook's stores or counters for repair or replacement. In short, if the Chow Tai Fook necklace you bought is broken, you can first check the terms on the shopping voucher and warranty card to confirm the scope and duration of the warranty, and then bring relevant materials to Chow Tai Fook stores or counters for consultation.