| 1951 | Moya Asia Pte. Ltd.
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| 1952 | Matrix Resource
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| 1953 | M.d. Construction Engineering Pte. Ltd.
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| 1954 | Minsang Oriental Pte. Ltd.
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| 1955 | M E Energetics Pte. Ltd.
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| 1956 | Meghna Power Engineering Pte. Ltd.
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| 1957 | Mirage Supplies Enterprises
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| 1958 | Macgyver Engineering Pte Ltd
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| 1959 | M+w Singapore Pte. Ltd.
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| 1960 | Maha Construction & Engineering Pte. Ltd.
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| 1961 | Meng Thong Construction Pte Ltd
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| 1962 | Modello Pte. Ltd.
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| 1963 | Mei Han Sen Engineering & Construction Pte. Ltd.
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| 1964 | M Tech Air Con & Security Engineering Pte Ltd
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| 1965 | M Bina Construction
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| 1966 | Merlin Renovation And Aluminium Works
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| 1967 | Mao Sheng Quanji Landscaping Design Pte Ltd
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| 1968 | Mac Construction & Trading
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| 1969 | Maxtop Electrical Contractor
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| 1970 | Mst Engineering Pte. Ltd.
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| 1971 | Meng Nguan Electrical & Services
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| 1972 | Mdb Technologies Pte. Ltd.
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| 1973 | Milworks Solutions Pte. Ltd.
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| 1974 | Maxim Controls & Heating Equipment
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| 1975 | Mp Plumbing & Sanitary Pte. Ltd.
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| 1976 | Mactech Engineering & Trading Pte. Limited
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| 1977 | Mahalakshmi Electrical Engineering
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| 1978 | Maxpower Engineering & Construction
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| 1979 | Mitra Bahtera Segarasejati Pte. Ltd.
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| 1980 | Metric Engineers Pte. Ltd.
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