1970 Sunlight starts providing general electrical contracting services in one of the shophouses in Syed Alwi Road.
1975 Mr. Lim Kwang Joo and Mr. Tan Boon Seng set up a 1000 sq ft facility in one of the JTC factories in Kallang to assemble electrical panels.
1977 To cater to the rising demands of HDB flats, Sunlight shifts its operation to a 3500 sqft workshop in Toa Payoh to increase its production of switchboards.
1982 The rising demands from the HDB flats increase exponentially, leading to the tripling of Sunlight's business volume. Sunlight shifts to a 9,600 sq ft factory in Tagore Ave.
1985 Sunlight relocates to a 45,000 sq ft double-storey factory at Gul Ave. Sunlight becomes the first company in Singapore to use CNC Turret Punch machine to manufacture electrical switchboards.
1990s Sunlight changes its direction and focuses more on private residential, factories, schools, government buildings, airports, process plants, etc. Key projects include: SONY SDS factory, Seagate Technology at Ang Mo Kio & Woodlands, NEC Capital Tower, Singapore Airfreight Terminal 6, and several others.

At the same time, Sunlight initiates a series of product type-testing activities at the SISIR and other overseas ASTA accredited labs and receives a range of ASTA and KEMA Type-test Certifications.

1997 Sunlight moves to Ubi Ave 4.
2000 Sunlight is listed on the Singapore Exchange Securities Trading Limited – Catalist
2010 Sunlight officially opens its latest headquarters at No. 1 Third Chin Bee Rd. The year coincides with Sunlight's 40th anniversary.
2011 Sunlight has obtained Singapore Green Products Certification for FULL Sunlight Low Voltage product range by Building & Construction Authority (BCA) for:
  • Sunlight Low Voltage Switchboards
  • Sunlight Motor Control Panels
  • Sunlight Pan Assembly Distribution Boards
  • Sunlight Consumer Unit and Meterboards