The helicopters will be used to perform firefighting, rescue, observation, transport and civil protection duties.
The value of the order and the delivery schedule weren't disclosed.
AgustaWestland said aircrew and technician training is part of the contract and the company will also provide aircraft support.
This latest selection marks the entrance of the Grand New helicopter into China's public security market, adding to the AW119Ke, AW109 Power, Grand and AW139 types that are already in service.
The Grand New features synthetic vision and is the first helicopter in this class on the market fully compliant with the latest advanced Global Positioning System navigation requirements for all weather operations.
Orders for more than 300 helicopters from the Grand series have been placed by nearby 180 customers in more than 30 countries worldwide, AgustaWestland said.