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Stonelf International
Powering Development

Delivering industrial solutions in power generation, structural steel, lighting, and infrastructure components across developing markets.

Explore Products

About Us

Stonelf International Resources Limited (Hong Kong) and Topwayer Enterprise Corp. (Philippines) – committed to delivering quality industrial solutions.

Who We Are

Stonelf International Resources Co., Ltd. (Hong Kong) originated from Shanghai Youhe Industrial Co., Ltd., a company focused on providing comprehensive solutions for developing countries in the electric, construction, and agricultural sectors.

Topwayer Enterprise Corporation was established to manage product distribution and project execution in the Philippines, ensuring localized support and rapid response.

Since the enterprise reformation in 2009, our parent company has strengthened its position in China’s engineering and construction materials sector, with a proven track record across five provinces. Now, we extend our expertise to support infrastructure development in emerging economies.

Project Site Steel Structure Generator Unit Industrial Facility

Certifications & Partnerships

Stonelf is certified under the ISO9001 quality management system, ensuring consistent standards in product sourcing, logistics, and project delivery.

We maintain strategic partnerships with leading global brands in power generation and construction materials, enabling us to deliver reliable, high-performance solutions tailored to local needs.

Our Products

High-quality industrial components and systems for power, construction, and infrastructure.

Cummings Generator

Cummins Series Generator

Powered by Dongfeng Cummins Engine, known for reliability and efficiency in industrial applications.

Diesel Generator | 3MW Capacity
Perkins Generator

Perkins Series Generator

Features UK-engineered Perkins engine, delivering high performance and fuel efficiency.

Diesel Generator | Industrial Grade

MAN Series Diesel Generator

Equipped with Germany’s renowned MAN engine, ideal for heavy-duty and continuous operation.

Diesel Generator | High Torque

Genset Spare Parts

Comprehensive range of spare parts for various generator brands including Cummins and Perkins.

OEM & Compatible Components

ASTM A36 Angle Steel Bar

Hot-rolled structural steel used in construction, machinery, and tower frameworks.

Construction Grade | High Durability

ASTM A36 Steel Channel

Available in galvanized or primed finish for corrosion resistance and long-term structural integrity.

Galvanized or Primed | Structural Use

ASTM A36 Wide Flange H Beam

Structural wide flange beam offering medium strength at low cost for building frameworks.

H-Beam | Medium Strength

Industrial Lighting Systems

High-efficiency lighting solutions for industrial facilities, warehouses, and outdoor installations.

LED & Metal Halide Options

Industrial Pipes & Fittings

Durable piping systems for water, gas, and industrial fluid transport.

Carbon Steel | Corrosion Resistant

Solar PV Components

Mounting structures, inverters, and accessories for grid-connected and distributed solar projects.

20MW+ Projects Supported

Why Choose Stonelf?

ISO 9001 Certified

Our integrated quality management system ensures consistent product standards and reliable service delivery.

Global-Local Approach

Backed by international expertise with on-ground presence in the Philippines for fast project execution.

End-to-End Solutions

From power plants to irrigation systems, we deliver complete industrial infrastructure solutions.

Featured Projects

3MW Diesel Generator – Humen Naval Warfare Museum, China

Supply and installation of a high-capacity diesel generator system to ensure uninterrupted power for a critical cultural facility.

20MW Grid-Connected PV Power Station – Ningxia Shizuishan, China

Engineering and component supply for a large-scale solar power plant contributing to regional renewable energy goals.

18MW HFO Power Plant – Australia/Oceania Region

Heavy Fuel Oil (HFO) based power solution for remote island communities requiring stable and cost-effective electricity.

Distributed PV Power Project – Jinjiang Shenhu Town, China

Implementation of decentralized solar generation systems to support local energy resilience and sustainability.

Latest News

11 Mar 2019

Stonelf International and Topwayer Enterprise

Stonelf International Resources Limited (Hong Kong) and Topwayer Enterprise Corp. strengthen collaboration for Philippine market expansion.

11 Mar 2019

ASTM D610 Container Aging Testing Service

Introduction of advanced material testing services to ensure product durability and compliance with international standards.

5+
Provinces in China
2009
Enterprise Reformation
20MW
Solar Projects Delivered
3MW
Largest Genset Project

Get in Touch

For inquiries about our products, projects, or partnerships, please reach out through the official website.

Visit Official Website to Contact

Contact Information

  • Phone: TEL: +63-044-9319114
  • Mobile (SMART): 0921-6715951
  • Mobile (GLOBE): 0917-1533336
  • Email: [email protected]
  • Email: [email protected]
  • Address: 1462, National Rd., Parada, Sta Maria, Bulacan, Philippines 3022
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