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Get in Touch

[email protected]

Our Location:
15000 West 44th Ave, suite B
Golden, CO


Why Choose Us


We have a strong R&D team,and we can develop and produce products according to the drawings or samples the customers offered.

  • Cost: We have two our own casting foundries and one CNC machining factory. So we can offer the best price and best products directly.
  • Quality: We have our own testing lab and the most advanced and complete inspection equipment,which can ensure the quality of the products.
  • Capacity: Our annual production capacity is over 250,000 sets,we can meet the needs of different customers with different purchase quantity.
  • Service: We focus on developing high-quality products for top-end markets. Our products are in line with international standards,and are mainly exported to Europe, America, and other destinations around the world.
  • Shipment: We are close to Ningbo and Shanghai ports and can provide fast and convenient shipping service for customers.
Our Advantage
  1. Strong research and development capabilities and a comprehensive product line.
  2. Advanced production equipment and laboratory equipment.
  3. From the metal shaft of the gear to the gear forging, from CNC machining to precision assembly.
  4. Strategic partner of some well-known agricultural machinery manufacturers in the world.
  5. Has a number of cooperation projects with a number of research institutions and University Research Institute .
Our Ambition

To build a world-class brand on transmission machinery and equipment manufacturing. Sunfield will always be the best partner for stakeholders.

About ToolTuff

ToolTuff is a specialized supplier of a full range of agriculture gearboxes, pto shafts, chains, sprockets, trailers, agriculture machined parts and so on.

Due to our sincerity in offering best service to our clients, understanding of your needs and overriding sense of responsibility toward filling ordering requirements, we have obtained the trust of buyers worldwide. Having accumulated precious experience in cooperating with foreign customers, our products are selling well in the American, European, South American and Asian markets. Our products are manufactured by modern computerized machinery and equipment. Meanwhile, our products are manufactured according to high quality standards, and complying with the international advanced standard criteria.

With many years’ experience in this line, we will be trusted by our advantages in competitive price, one-time delivery, prompt response, on-hand engineering support and good after-sales services.

Additionally, all our production procedures are in compliance with ISO9001 standards. We also can design and make non-standard products to meet customers’ special requirements. Quality and credit are the bases that make a corporation alive. We will provide best services and high quality products with all sincerity. If you need any information or samples, please contact us and you will have our soon reply.