Provincially Union List - Salaburi
- Siam City Brassware Labour Union
- Porcelain Painting Workers Union
- Thai Peroxide Labour Union
- Thai Acrylic Fiber Workers Union
- Furukawa Metal (Thailand) Labour union
- Royal Porcelain Workers Union
- Karat Sanitary Workers Union
- Chinano Kenchi (Thailand) Workers Union
- Thai Sulphites and Chemical Labour Union
- Patraree Factory Workers Union
- Siam Cement Construction Materials Workes Union
- Siam City cement labour union
- Shinanokenshi (Thailand) Supervisory Labour Union
- Indo-Rama Chemicals Labour Union
- Asia Cement Supervisory Labour Union
- Asia Cement Labour Union
- Kohher (Thailand) Supervisory Labour Union
- Thai Industrial Gas Workers Union
- Royal Ceramics Saraburi Workers Union
- Siam Iron Labour Union
- Saha Mosake Sara Buri Labour Union
- Sahakij Wisal Labour Union
- Dairy Framing Promotion Organization of Thailand
