BOQU Instrument focus on development and production of water quality analyzers and sensors. At present, the annual quantity of water quality sensors and meters is over 100,000pcs, it's the biggest factory in Shanghai. https://www.scribd.com/user/993272093/boquinstrument?_gl=1*cx0sb*_up*MQ..*_ga*ODYyNTU3MDgzLjE3ODE0MTI3ODY.*_ga_Z4ZC50DED6*czE3ODE0MTI3ODUkbzEkZzAkdDE3ODE0MTI3ODUkajYwJGwwJGgw*_ga_8KZ8BV0P5W*czE3ODE0MTI3ODUkbzEkZzAkdDE3ODE0MTI3ODUkajYwJGwwJGgw