After initial problems (missing rods and did not fit into each other), I had contacted the customer service.
This has then also responded well and also requested several times if everything is OK. I got the defective / missing parts are replenished and qualitatively ok and now everything fits. The Qualittät is quite useful especially the small pack size is good. All in all, there is now for the exceptional customer service once an additional star.
I recommend the set for amateur photographers and amateur photographers from the use and at times a portable background. Certainly less suitable but to use for the hard daily professional photographers good for hobby and amateur.