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Aside the specialty areas our above subsidiaries are involved in, OLS Manufacturing Co. has further specialized units dealing with our acclaimed Tunnel Ventilation Dampers, as well as a Clean Air Unit that deals with air purifiers of commercial and hospital grades.

OLS TUNNEL VENTILATION DAMPERS With OLS' expertise and many years of dedication to research and product development, the OLS tunnel ventilation damper is one of the many high quality products that OLS has developed for the industry
To Find Out More, Visit Our Microsite
HUNTER AIR PURIFICATION Why the need for clean air? Hunter Air Purifiers captures 99.97% of airborne particles using TRUE HEPA filter and also reduces odor with its carbon filter

Read More About Hunter Air Purifiers

+65 6861 5253

+65 6861 9850 (Fax)
3-B Joo Koon Circle

Singapore 629 034

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