Get attribute of multiple nodes at once|OPC UA Implementation: Stacks, Tools, and Samples|Forum|OPC Foundation

Hi,
I have implemented a client that extracts data from a certain OPCUA server.
I implemented using the attribute read service to acquire the value of a node of 700 variable classes, but it takes about ten seconds to acquire and it is too late
I think this is because the communication between server and client occurs 700 times.
Is there any way to get attributes of multiple nodes at once
Please tell me what I can do to improve my speed
Thank you