AWe've had for 6 months and so far so good. ?We both like it. :). It has not sank or sagged any and I don't suspect that it will, seems to be made well.
AWe do not recommend to put this mattress on an adjustable bed. Once the mattress bends, the pocket springs may be out of shape, and affect the support and comfort.
AThank you for your question, the supplier is from Malaysia, the supplier name is a trade secret, and the email is sent to obtain the name of the supplier company. customservice@sunrisingbed.com thanks,