Hebei Huijin Group's (SHE:300368) unit, Beijing Zhongke Tuoda Technology, sued New Century Technology over a sales contract dispute, according to a Thursday disclosure on the Shenzhen bourse.
Huijin's shares dropped by around 5% at the close of Friday's trade.
The Chinese banking and financial equipment supplier is seeking 11.2 million yuan for unpaid dues over a contract signed in 2021.
In the suit, Zhongke Tuoda said the contract involved the provision of Huawei products to New Century.