Lafarge Shui On Cement, which is 55 per cent owned by the Paris-based group and was formed with the local Shui On Construction And Materials Ltd. (SOCAM) group in late summer, is acquiring Shuangma Investment Group for US$38m.  However, including debt and other commitments taken on the effective cost rises to almost US$160m.  This acquisition provides the group with a further three integrated cement plants in the Sichuan province in south-eastern China. The three plants, which have a combined capacity of 3.3Mt, should bring Lafarge Shui On Cement’s capacity to 20.7Mt by the end of this year.  Of the three cement works being added, one in near Mianyang in the northern part of Sichual and the other two are both near Yibin in the southern parts of the province.   The shares in Shuangma Investment Group’s subsidiary Shungma Cement Co. Ltd. are traded on the Shenzhen stock exchange.