Neck joint or mannequin service is defined in some way such as first of all, an eCommerce businessman or an apparel seller wants to grow their business at the online market place to gain a lot of clients.
At the time they photograph photos of their apparel product on the model.
Indeed, the live model is not a cheap cost overall side. At least when shot the product at mannequin different angle you will not see the inner part at a time.
At the moment to show the front and back part together mannequin or neck joint is the best way.
Secondly, suppose the same product shot front and back part need to view the same proportion symmetrically neck joint or mannequin is a great way in that time.
3rd sometime it is need be to separate apparel products from model and change dress of model mannequin effect is essential for this job.
There are some types of neck joint
Basic neck joint
Symmetric neck joint
Logo replacement
Mannequin removes Bottle logo change