Founded in 1993, JST is one of the world's largest producers of cast resin transformers and related electrical equipment. We are one of only two cast resin transformer manufacturers in the world to achieve UL recognition. JST's medium voltage cast resin transformers, which are available from 150 kVA to 20,000 kVA, use the proven May Christie-type design.

• We manufacture medium voltage transformers (10-25 kV) used in large infrastructure projects like factories and real estate developments, and municipal projects such as airports and subway systems.
  
  
• We received ISO 9001 and 14001 certification in 1997 and 2000, respectively.
  
  
• We are OSHA 18000 compliant.
  
  
• We are one of two manufacturers of UL certified cast resin transformers in the world. We achieved UL certification in January 2007.
  
  
• In 2005, we were named "Best New Supplier" and in 2007 we received the "Excellence in Quality Award" from one of the world’s largest electrical energy OEMs.
  
  
• Our staff includes over 50 degreed design engineers.
  
  
• We have a stellar reputation. We deliver the highest quality products with the shortest lead times - and operate with an extremely high degree of integrity.