XIAMEN SENYANG CO ltd., en.medicalxm.com www.medicalxm.com = Con Man. PING WANG, aka: SY CARTER, CARTER LIN, CARTER, etc. Also Con Woman Aka: SUSAN WANG, ANNY DING, SUSAN ANNY DING, SUSAN, etc. MEDICAL ALTERNATING AIR MATTRESSES with MEDICAL ALT PUMPS. BUYERS BEWARE. AVOID THIS SELLER. Purchased Medical air Mattresses from PING WANG takes extended many months to post out. Specificly ordered mattress to have micro holes customised, mattress not as we ordered described arrived 5 months later which did not alternate as we equested, wrong pressure in pump not as we ordered. Patients presure wounds started bleeding & breaking own. Mattress'es sent not as PING WANG stated mattress not water proof, blood from patient goes through cover. Mattresses do not alternate some cells stay ridged non alternating causing patient unfair suffering. Alternating pumps not as pressure ordered sent 50-180 mmHg instead of softer 10-50mmHg Contacted XIAMEN SENYANG CO LTD, SUSAN WANG & PING WANG unhelpful let's you down didn't want to know. Xiamen 361000, Fujian, China. Internet