... GB10666-2004Appearance: Grey, yellowish-brown ,black or brown solid blockSize:2-4mm,4-7mm,7-15mm,15-25mm,25 ... 2008 China Quality Certification Centre, CNAS 00110Q23280R1S/1200 Production of calcium hypochlorite 2010/04/09 --- 2013/04/08 Testing ... Institute of Technology, CNAS Calcium Hypochlorite 2011/03/21 Test Report 2 The Hazardous Products Central Laboratory, State General Administration of ...