Non-spindle core bobbin thread or bobbin thread, which do you prefer?

Hi, I am Dave from Richpeace.
We have got a lot of inquiries and orders of non-spindle core bobbin thread winding machine recently. Some are bobbin dealer who used to buy from India and sold to the final after boxed. Some are embroidery factory who choose to make the bobbin thread themselves rather than buy it from others, cause it will reduce their cost.
Our non-spindle core bobbin thread winding machine suits for most embroidery machine with bobbin diameter 21mm or 23mm for quilting machine.
Its productivity is about 4pcs/min, total cost for long term use is lower than buy the bobbin thread from others.Not to mention that the bobbin-less bottom thread has many advantages over the bobbin thread, such as low thread breakage, low cost, large capacity, low frequency of bobbin thread replacement, and high bobbin thread utilization.
Please share the bobbin thread you are using or making now.
https://www.youtube.com/shorts/9kyz3dVfCnA
And if you are interested in, just contact with me: +8616622886682(Whatsapp/Skype/Zalo/Wechat)