How to replace push button wiper blades ?

XIAMEN：6H, No.35 ,Xianglian Li, Siming Dist.,Xiamen
                 City,Fujian 361009,China

ZHANGZHOU：No.4 Jinxia Road, Wenpu Industrial，
                          Zone, Jiaomei Town, Longhai，Zhangzhou,China
TAIPEI : No.24,Alley 7,Lane 81,yung Yeh Road, Xinden 
             City,Taipei Hsien,Taiwan 23153,R.O.C.

TEL：0592-5024675/5024676
FAX： 0592-5025215
EMAIL：sales@shown-wiper.com