What does the word "Makes" mean here? Do they design the drive units, the amplifiers, etc.? Or do they just send the requirements to Shenzhen and have a facto

What does the word "Makes" mean here? Do they design the drive units, the amplifiers, etc.? Or do they just send the requirements to Shenzhen and have a factory assemble the product from off the shelf parts? I'm not criticizing, just curious.