Vestas will supply 75 V110-2MW turbines and 25 V100 2MW turbines to the Azuoqi 1A and Azuoqi 1B projects.
The order is Vestas' largest in China in 2015, according to the company. The manufacturer will also service the turbines for two years.
Delivery and commissioning of the wind turbines are expected in second quarter of 2016.
Hanas has previously ordered 600MW of turbines from Vestas for projects in China.
This week, Vestas announced revenue of €5.4 billion in the first nine months of 2015 with an order intake of 6.3GW globally.
Vestas introduced the V100 and V110 2MW turbines into the Chinese market earlier this year to capture the move towards low- and medium-wind projects closer to the main population areas on the east coast.
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