We design, manufacture and supply single phase, dry-type power transformers ranging from 1VA to 2000VA. From customised transformers to finished assembly we cover them all.


We design innovative power transformers that exactly meet your requirements and specifications in terms of e.g. size, output capacity, housing, operating conditions.


We manufacture and supply an extensive range of toroidal and traditional E-I transformers, both off-the-shelf and designed for your specific requirements. And we provide an OEM service on all our products.


Our transformers are very competitively priced. And if production costs in your country are steadily increasing then TOPMARK can be your full production line factory in Taiwan. 

Send us your device or product’s other components and we will assemble them, package them and send them back to you ready for you to deliver to your client  -  all at considerable savings to you.


TOPMARK also helps business partners to source, liaise, assemble and supply products from other manufacturers in Taiwan. With our geo-knowledge and technical expertise, we are confident that we can arrive at an optimum solution that will allow us to deliver a best fit for your business or products. 


The world uses TOPMARK. Here's why.
TOPMARK adopts an individual approach to every client through:
  • World-class power solutions for your appliances
  • Design innovation that ensures that all our products are future ready
  • Creative solutions to your individual design requirements
  • Premium quality that maximises value for money for our clients
  • Highly energy efficient products using cutting edge technology that will keep your costs down
  • Reliability that ensures our transformers operate optimally under the harshest and most demanding conditions
  • Short turnaround times and punctual delivery to keep your project timelines on track
  • Product service and support, giving you the peace of mind that comes from dealing with a company whose reputation for reliability is second to none
  • Experience in collaborating with international firms/buyers for smooth and prompt packing and dispatch, transport and customs paperwork
  • Confidentiality designed to protect your commercial interests and Intellectual Properties