As 2017 draws to a close, the industry has summarized the 2017 sales ranking. First: Yinfeng spring machine. Second: Swimming spring machine. Third: create spring machine. Quality Ranking: No. 1: Max spring Machine. Second: Yinfeng spring machine. Third: Yongteng spring machine. Most popular brand: First: Yinfeng spring machine. Second: gold spring machine. Third: universal spring machine.   

                                                                                                            Tatistics from spring Association On December 15, 2017