... 3.OEN&ODM manufacture 4.CFR1633&BS7177 5.Sample acceptable spring mattress:(1) Size:Twin : 99x190x25cm; 39"x75"x10"Full: 137x190x25cm; 54 ... )Composition:(3) High quality chemical fabric(4) High elasticity bonnel spring, Ø2.3, optional row count: 252 (12*21), 312 (13 ... *24), 336 (14*24), 364 (14*26). Consistent spring diameter and even waist diameter provides increased stability and supporting ...