KINGTELLER(SZ:002177) Sou Hu Cai Jing·2025-12-31 05:40Group 1 - The core point of the article highlights that Yuyin Co., Ltd. has experienced a continuous three-day trading limit increase, achieving a three-day consecutive limit up [1] - The stock reached a trading limit at 13:23 today, with a transaction amount of 3.393 billion yuan and a turnover rate of 56.23% [1] - The digital currency concept has become active again, with the company establishing a digital currency research and development center to engage in related research [1] Group 2 - In the financial services sector, the company is involved in ATM cooperative operations, technical services, and related financial services [1] - In terms of industrial park operations, the company is engaged in the operation of industrial parks developed from its own properties [1] - In the field of biometric technology, the company has developed technologies such as facial recognition and fingerprint recognition [1]