Chinese Hybrid Solar Inverter

Hello friends! Please can someone here help give me a clue which factory designs these Chinese Hybrid Solar Inverters? I will post the pictures and the PCB motherboard of these devices here. I have seen that all these Chinese suppliers are not the designer of those products. All these Inverters are Original Design Manufacturer (ODM), I want the link to the direct Company that design/manufacture them.

Truly I have used so many of these Inverters from various brands but no matter the name they give them, they are all the same product. Thay are known for their parallel capabilities. Some allow 6 units maximum in parallel, some 9 units maximum.