'
型号分类:
ER11:(1/1.5/2/2.5/3/3.5/4/4.5/5/5.5/6/6.5/7)
ER16:(1/2/3/4/5/6/7/8/9/10)
ER20:(1/2/3/4/5/6/7/8/9/10/11/12/13)
ER25: (1/2/3/4/5/6/7/8/9/10/11/1/2/13/14/15/16)
ER32: (2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20)
ER40:(2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25
'