test machine, roll to test hardness of the mattress and how durable of it. We do this process once we have new spring core come out.
CONTACT US
Tell: +86-757-85519362
+86 -757-85519325
Email: service@synwinchina.com
Add: NO.39Xingye Road, Ganglian Industrial Zone, Lishui, Nanhai Distirct, Foshan, Guangdong, P.R.China