swivel
Noun 转环, 旋转轴承, 转椅座架
Verb (使)旋转

Hong Long--- Office swivel chair, conference chair, auditorium, office sofa, office desk, bookcase, conference table series.
“鸿龙”——办公转椅﹑会议椅﹑礼堂椅﹑办公沙发﹑办公台﹑书柜﹑会议桌系列；;