On 30^th, Sept, 2016, CHALCO Guangxi Branch sent a letter of thanks to CINF for the timely handling with elaborate direction of dangerous situation of No.3 red mud dam suspected leakage in 12^th, August, 2016, to express the friendship between the client and CINF for jointly overcoming the difficulty, sincere cooperation for winwin purpose and express good intentions for deepening mutual cooperation and joint development.