Regarding to your email on August 14, 2015 asking for our review for the 3rd Appendix of Contract Variation of Package No. 06-ĐHTL Civil works for Infrastructures. Following by our email sent to you on August 25, 2015 of the above mentioned subject and base on provided information, we found that the proposal of variations of the package are acceptable. However, it is recommended that for further proposal of quantity variation, a detailed calculations of cost per unit quantity should be provided.