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Sumitomo Chemical Olyset Net


  • Kisongo, Tanzania based factory: one of the region's largest employers: 7,000 employed at its peak.
  • Up to 30 million nets produced annually in Tanzania
  • Program expansion to Ethiopia and Malawi
  • Partnerships with the Acumen Fund, PSI, UNICEF and the Tanzanian government are crucial for success.

Sumitomo Chemical - Private Sector Partnership Spotlight

Sumitomo Chemical, one of the world’s largest hybrid chemical companies, is well known for its Olyset® technology. This technology has improved the efficacy of bed nets by providing long-lasting protection from malaria-spreading mosquitoes. In addition to providing nets and improving malaria control, Sumitomo Chemical has transferred technology, skills and investment to Africa, contributing to the local economic development. For more details about the economic impact please click here.

After transferring its technology to A to Z Textile Mills in Tanzania, royalty free bed net manufacturing started in 2003. The relationship culminated in the two companies opening a new joint venture Olyset® Net factory in 2008.

East Africa now has a stockpile of WHO-recommended nets and its residents no longer have to wait for shipments from Asia. In addition, the profits generated from Olyset® business are used to fund schools in Africa.

Sumitomo Chemicals was recognized by GBCHealth in 2012 with an award for “Application of Core Competence.” Read more about the award and watch a a short video on the program here.