Public-Private Partnerships (PPPs) are based on co-operation between the public and private sector. The reason for using it is a lack of public financial sources. For this reason. in most PPPs the management and financing of the project is entrusted to the private sector. https://www.spidertattooz.com/iOptron-HAE43EC-Strain-Wave-AZ-EQ-Mount-w-iPolar-High-Precision-Encoder/