Button switch common brand Domestic professional button switch production brand: SANLI / Hangzhou Sanli ONPOW / Zhejiang Hongbo TYTEE / Shanghai Tianyi APT / Shanghai two workers Domestic button switch brand (other): CHINT / Chint DELIXI / Delixi PEOPLE / People International professional button switch production brand: EAO / Switzerland Yili good IDEC / Japan and spring NKK / Japan Nikko FUJI / Japan Fuji DECA/Taiwan Progressive ABBTEND/Taiwan Tiande OMRON/Omron Schneider/Schneider OMRON / Omron International button switch brand (other): Panasonic / Panasonic SIMENS / Siemens E-switch US SCHURTER Germany ITW United States Abs Measure Tape,Best Tape Measure,Engineers Tape Measure,Tape Measure Measurements HENAN SHIJI HUALIAN TOOLS AND MEASURE CO.,LTD , https://www.hnsjhl.com