Famed Sky Water Treatment Chemicals Co. is based in China and lists water treatment chemicals on Global Trade Plaza. The company offers phosphonate antiscalants and corrosion inhibitors including ATMP, HEDP, EDTMPS, DTPMPA, PBTCA and dispersants such as HPMA, MA-AA, AA/AMPS, PAA, PAAS, PESA and PASP. A specific product is ATMP (amino trimethylene phosphonic acid), supplied as a colorless or light yellow transparent liquid with 48.0–52.0% active acid or as a white crystal powder with 95% minimum active acid. The liquid has a density of at least 1.33 g/cm³ at 20°C and a maximum colour of 40 APHA (Hazen); both forms show a pH of 2.0 maximum in a 1% solution and iron content of 20 ppm maximum. Buyers can send an enquiry through Global Trade Plaza.