... method: TT;L/C(Sight Credit) Rizhao HaoYu New Building Materials Co.,Ltd.is in the Rizhao Economic Development Zones High-tech Building ... by the Science& Technology Department of Shandong-Province, the Building Materials-Industry Office of Shandong-Province, Tsinghua University, Shandong University, ... to many countries,including Russia,South Africa,Angola Nigeria etc. composite porland cement 32.5R