Tel:+86-13950412146 Email:probest@probest.cn Skype: zhongweihua WhatsApp: +86-13950412146 (WeChat) Address:No.170, Jinyan Road, Jianshan Investment Zone, Fuzhou,Fujian, China Probest: Focus on the progress and commercialization in sensing technology! Focus on sensing technology & water analyzer instruments since 2013!