Unique Engineering and Construction Public Company Limited has signed the contract with Metropolitan Waterworks Authority for The Construction of Plumbing and related works. This involves the expansion of the main pipe along Prachathipok Road and Somdet Phra Chao Taksin Road with The Purple Line Project, Tao Pun - Rat Burana Section of The Mass Rapid Transit Authority of Thailand with details as followed The Construction of Plumbing and related works. This involves the expansion of the main pipe along Prachathipok Road and Somdet Phra Chao Taksin Road with The Purple Line Project, Tao Pun - Rat Burana Section of The Mass Rapid Transit Authority of Thailand.