We are Shandong  Watertreatment Chemical Co.,Ltd,professional produce watertreatment chemicals,such as--Amino Trimethylene Phosphonic Acid(ATMP)---1-Hydroxy Ethylidene-1,1 Diphosphonic Acid(HEDP)---Ehylene Diamine Tetra Methylene phosphonic Acid Sodium(EDTMPS)---Diethylene Triamine Penta(DTPMPA)---Polyacrylic Acid(PAA)---Polyacrylic Acid Sodium(PAAS)---Copolymer of Maleic and Acrylic Acid(MA-AA)---Glycine Dimethyl Phosphonic Acid(GDMP)---2--Hydroxy phosphonocarboxylic Acid(HPAA)---Polyhydric alcohol Phosphate ester(PAPE)---Hydrolyzed Polymaleic Anhydride(HPMA)---Copolymer of Phosphates and Acrylic Acid(PPCA)N-Sulfonic Amino Dimethylene Phosphonic Acid(SADP)---BTA*Na--MBT*Na---TTA*Na---Benzalkonium Chloride,Dodecyl(BKC/DDBAC 1227)---Isothiazolinones,(CMIT/MIT).,etc.