Dear Tham,In according to the recen

Dear Tham,

In according to the recent laboratory trial with Thang Long's PCB 40 slag cement with our SG 734 & 874, and in refer to our previous trials with PCB 40 cement with content of slag and lime stone, my observation as:
SG 734 & 874 may have good results in early/late strength with cement that has high content of limestone (say over 10%).
High content of puzzolan and slag were normally apply in the South.
SG 185 or SG 170 can enhance early/late strength of cement with high content of slag.
In the case of Thang Long's PCB 40, please discuss with them to increase the content of limestone to minimum of 10%, which reduce respectively to slag and puzzolan.
In the coming trial with Ha Tien's PCB 40 with 15% of slag, please make arrangement to carry out tests with our SG 185 also beside of requesting SG 734.

If the tests results with SG 185 OK, we will proceed for plant trials.

With regard