Shamrock Group provides toll and contract manufacturing in NZ for companies that need reliable, flexible bulk chemical production. Whether you have a formula ready to run or need a partner to source materials and manufacture from spec, we have the facilities, experience, and technical capability to deliver.
As a New Zealand-owned manufacturer with over 40 years’ experience, we work directly with technical managers, operations teams, and procurement managers across a range of industries – from agricultural blending to building products to waste management.
If you’re looking for local contract manufacturing services in NZ, please get in touch.
Toll Manufacturing vs Contract Manufacturing –
What’s the Difference?
What’s the Difference?
There are different types of contract manufacturing and toll blending to suit different business types and industries. Here’s an overview of how our services work.
| Toll Manufacturing | Contract Manufacturing |
|---|---|
| You supply all raw materials and your recipe. We manufacture to your specification and charge a per-kg processing fee. You retain full control of your formulation and supply chain. | You provide the recipe or product specification. We source some or all raw materials, manage quality, and deliver finished product. You benefit from our supplier relationships and buying power. |
Both services are available for bulk liquids and powders.
Industries We Serve
Unlike many contract manufacturing companies, we work directly with technical and operations managers to understand your specific requirements. We serve NZ, Australian, and international businesses across:
- Oil and lubricant blending
- Agricultural adjuvants blending
- Building and construction products
- Waste management applications
- Specialty industrial chemicals
Liquid Blending
Our Auckland facility offers bulk chemical blending and chemical toll manufacturing for liquids, processing volumes from 500 to 10,000 litres across eight static blending tanks. All tanks are stainless steel 316 construction with variable speed agitators, baffling for consistent mixing, and heated tanks with temperature regulation.
We handle both hazardous and non-hazardous liquids – contact us to discuss specific hazard classes.
Packaging formats:
- Jerrycans (20-25L)
- Drums (200L)
- IBCs
- Bulk tanker
Powder Blending
Three blenders available with capacities of 1,000kg, 1,000kg, and 1,500kg. All stainless steel internal construction with auto bag-filling machines.
Packaging formats
- 5kg-25kg bags (water soluble, lined, valve bags, polywoven)
- 1,000kg bulk bags
- Small containers and pails (5kg to 20kg)
- Hand-sewn bags on request
- All weighing equipment is NZ Weights and Measures tested and approved.
Why Choose Shamrock for Contract Manufacturing in Auckland and across NZ?
NZ owned and operated
You’re dealing with local decision-makers, not an offshore head office. That means faster turnaround, direct communication, and accountability.
40+ years’ experience
Deep technical knowledge across chemical manufacturing, formulation, and blending – applied across diverse industries.
Flexible capacity
Scale up production when you need it without capital investment in plant or equipment.
In-house formulation capability
Need adjustments to your product or starting from a brief rather than a finished recipe? Our in-house chemist can help. Find out more <Formulations>
Proven across industries
From agricultural blends to landfill management products to construction chemicals – we have a track record of delivering to spec.
