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| 1922 | He Shun Xin Construction Pte. Ltd.
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| 1923 | Hoong Huat Engineering Works Pte. Ltd.
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| 1924 | Hengs (os) Corporation Pte. Ltd.
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| 1925 | Heptacon Construction Pte. Ltd.
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| 1926 | Hock Hwa Builders Pte. Ltd.
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| 1927 | Hanako Construction Pte. Ltd.
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| 1928 | Haru Engineering Pte. Ltd.
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| 1929 | Hoyi System Pte. Ltd.
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| 1930 | Hup Rich Engineering Pte. Ltd.
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| 1931 | Han Fong Aluminium Pte. Ltd.
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| 1932 | Hitachi T&d Systems Asia Pte. Ltd.
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| 1933 | Hung Yuen Enterprise Pte. Ltd.
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| 1934 | Hks Engineering & Trading Pte. Ltd.
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| 1935 | Hrd Professional Handyman Pte. Ltd.
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| 1936 | Hong Seng Sports Surfaces Pte. Ltd.
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| 1937 | Homeland Construction Pte. Ltd.
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| 1938 | Hensen (s) Pte. Ltd.
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| 1939 | Hoga Iyota Communications & Technology (s) Pte. Ltd.
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| 1940 | Heng Leong Engineering Pte. Ltd.
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| 1941 | Hb Glass & Aluminium Pte. Ltd.
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| 1942 | Huason Engineering Pte. Ltd.
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| 1943 | Huang He Logistics Pte. Ltd.
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| 1944 | Hai Khim Engineering Pte. Ltd.
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| 1945 | His Intersecure Solutions (s) Pte Ltd
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| 1946 | Hwa Tong Engineering Pte. Ltd.
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| 1947 | Holdlandson Construction Pte. Ltd.
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| 1948 | Huashi Builders Pte. Ltd.
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| 1949 | Heng Ghee Construction Pte Ltd
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| 1950 | Hon Industries Pte. Ltd.
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