Poly Transformer Factory


Poly Electronic Service Co. Pte Ltd was founded in Singapore with humble beginnings in 1966 and has since evolved into a major transformer manufacturer and supplier. Our company’s core business is the manufacturing of dry type, low and medium voltage electrical transformers for the electrical infrastructure of all commercial, industrial, IT, marine, oil & gas and pharmaceutical industries. 

Poly (Changshu) Special Transformer Co. Pte Ltd was incorporated in China, Jiangsu Province in 2003 to increase our overall production capacity and to expedite entry into the Chinese market. It was set up as part of an expansion program and technology transfer by the Singapore office. Our 3000 sq. metres factory is located in Changshu City, two hours drive from Shanghai.


Our company operates its business based on one single philosophy – Customer First, Quality First. Constantly striving for product innovation and excellence, we invest in research and development, and partner closely with our clients to produce quality transformers for the 21st century.

 With over 50 years of experience, we are extremely flexible in design to provide customized solutions, competitive pricing, fast lead time and customer satisfaction. Our goal is to provide high-performance & reliable products that exceed your expectations.


Throughout the years in the electrical industry, we have reached out to many market sectors and our products are widely used and recognized. Our clients trust Poly’s commitment to our product performance, on-time deliveries and right up to providing technical or after-sales support. We have a long track record and strong customer base. 
Here are some of our clients who have partnered with us: 

ABB, Fuji SMBE, Socomec, Schneider Electric, Singtel, Keppel Corp., Marina Bay Sands, Mizuho Bank, Bank of China, Singapore Police Force, AMS Singapore, Qualcomm, UTAC, SSMC, Global Foundries, Micron, LTA & SMRT, MTRC, EMSD HK, MGM Macau and many more.

Please contact us for our latest project references.

Like To Know More?

Our experienced consultants are more than happy to help you with any questions. Please send us a message and we will get back to you as soon as we can within 24 hours.


Head Office & Manufacturing Plant

​Poly Electronic Service Co. Pte Ltd
Blk 26 Kallang Place #01-14/15

Singapore 339157.

Tel: +65 6298 8088 Fax: +65 6292 0888

Email: sales@polytransformers.com

GST & Business Registration No: 200009271-N
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Manufacturing Plant

Poly (Changshu) Special Transformer Co. Pte Ltd
江苏省常熟市虞山林场三峰工业园3号厂房, 邮编215550.
Tel: +86-512-5240 2798
Fax: +86-512-5240 2948
Email: chenmingdui@126.com