The machine with two volumes of narrow web and a roll of paper as raw material, through the web of paper and paper pasted together and gradually cut off, thereby forming a hand.
Portable Residual chlorine colorimeter LH-C01 measuring range 0.00-3.00mg/l,is widely usd in the fields of waterworks,dringking water plant,sewage plant,river and lake water quality monitoring station,laboratory research,water treatment project,agriculutu