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Power Generation Specialist

Top One Power Limited offers an extensive product range across industrial diesel generator sets. Our open and enclosed diesel generator sets are driven by Cummins and Perkins engines, ranging from 25 kVA to 2500 kVA (20 kW to 2000 kW). We also provide marine generators and spare parts for the international diesel genset market.

Having been serving the global growing need for power generation since 2008, Top One Power is the authorized Genset Original Equipment Manufacturer (GOEM) of Cummins Inc. and Chongqing Cummins. We have over 50 years of industry experience in power generation from our parent company – Yip Shing Diesel Engineering Co. Ltd.

Our headquarter is based in Hong Kong alongside our main manufacturing facilities and self-owned warehouse, from generator set assembly lines to quality control checks to ensure our product quality. In 2013, we have extended our business operation into Dongguan, China to expand our production line for soundproof generator sets.

Customer satisfaction is our top priority. From material to design, we are determined to maintain the best product quality, striving to satisfy customers’ demands.

We specialize in custom-built enclosure sets for no matter stationary or mobile applications. Our latest series is equipped with engines applying Quantum techniques, enhancing durability and stability. Additionally, this series is able to meet strict measurements from the U.S. Environmental Protection Agency (EPA) and European Union (EU).

top one power Headquarter in Hong Kong


Parent Company - Yip Shing founded
Directors successfully completed the Cummins Engine Company, Inc. training course
Extended headquarter to over 10,000 meter square plant in Hong Kong
Became the first Cummins independent logistic centre
Top One Power established
Extended services to Dongguan, China
Obtained Outstanding Overseas – Market Award from Chongqing Cummins Engine Company
Solar panel installation services


To power the world with flexibility and be customer-oriented to connect people around


Top One Power aims at providing quality-based container boxes and power solutions in the global market, we are continuously:

  • Building up a worldwide network
  • Enhancing product quality to meet international customers’ needs
  • Partnering with our customers with trust and mutual cooperation
  • Looking for alternative power solutions like green energy for sustainable development

Worldwide Customer Base

we serve worldwide diesel generator industry

Australia | Argentina | England | Korea | Guyana | Malaysia | Myanmar | New Zealand | Russia | Singapore | Thailand | The Netherlands | The Philippines | Vanuatu | Vietnam

Customer Testimonials

Thank you for your updated quotation and availability status.
Your discount is most appreciated. Please help me to thank your management for the additional support given to us.
In the future, I will try to channel more orders to your company.

You have responded pretty quick for a lengthy enquiry, not a slow response at all, thank you!

Very nice! We like to work with you.. ?
We want to improve with you.

We sold one of the KTA19’s this week. The customer insisted on a test. I am pleased to inform you that the engine ran perfectly and produced 100pct power.
I would like to congratulate your excellent engineers. These engines are gaining a very good reputation over here. Well done.

Thank you. I know you are doing best for us. Thank you again.

For the record the CCEC engines are very good. We have exceeded 45k hours in PNG running continuously.

Guys – forklift radiator arrived just now and amazingly it is the same! Was packed very well, took ages to unpack. Well done and thank you.

We are so happy and grateful for your cordial gifts and cards.
You and Yipshing are a reliable business partner for us and wish we to strengthen and to expand cooperation in 2021 as ever.
We appreciate your sincere support and cooperation all the time.

Definitely. Our customers love those 800kVA generators you sold us.