Mount shipped dismantled without any instruction manual nor any document but not very difficult to put pieces in order.
Shipment was effected through Netherlands Post and Liege, Belgium linehaul. It was stuck in Liege for 30 days and the transits were extremely slow. More than 2 months to arrive to Spanish customs. Completely unacceptable. I will issue a complaint against AliExpress for this unefficient way of shipment.
Mount looks OK. I have to verify how it will be working with real environment.