About Us
We provide a comprehensive range of industrial mixers, including powder mixers, vacuum dryers, and reactors – especially designed for food, pharmaceuticals, chemicals, life sciences, and environmental technology industries. Our equipment meets the highest standards of efficiency and reliability.
Engineering Expertise You Can Trust
With 150+ professionals at our Shanghai manufacturing hub, we combine cutting-edge technology with hands-on support to become your trusted partner in mixing solutions. Backed by 30 years of expertise, our engineering team doesn’t just meet requirements—we anticipate them. By analyzing your mixing processes and industry-specific challenges, we deliver customized solutions and data-driven recommendations.
1989
Founded
Factory
Shanghai, China
150
+
Staff
40
%
Export Sales
Innovation Fun
Cooperation with global partner to keeps our technology always advancing. More important is that our experienced engineer team enjoys developing new solutions for our customer’s processing problems as well. This help to foster positive effect through new product development with international market opportunities. We continue to building the culture of Innovation Fun and strengthen practical application of the patent and technology development during daily fabrication. All these bring S&L technology to the forefront.
Continual innovation and upgrade enable S&L to fulfill increasing diverse demands of processing industry and equipment.
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Honor:
Hi-tech Enterprise -
Patent:
50+
010203
Quality is the criteria of survival and S&L always put it in our top task. Our mixing machines are fabricated with step-by-step inspection through metal processing, welding, assembly, running and final test.
Our Quality & Standard is higher than others
● Quality Management System ISO 9001:2008
● Environmental Management System ISO14001:2004
● CE certificated for all of the mixers
● Pressure Vessel certificated for vacuum mixers and other special mixers
● Full test in factory
● Dynamic Test for high speed mixer
● Nondestructive Test for special mixers
● Water Pressure Test for jacket
● SGS audited supplier
● SIGMA Enterprises Credit Assessment 3A
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1989Shuanglong Mixing Factory founded
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1990Started production of the first Conical Screw Mixer
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1998Start production of the first Horizontal Mixer
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2002Factory was established in Shanghai
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2003Start production of the first Plowshare Mixer
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2004Developed horizontal ribbon mixer with mixer expert in the US
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2005Developed Paddle mixer with Korean and expanded international market
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2006Developed the first 30000L Conical mixer successfully
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2007Developed Plough Mixer with German enterprise
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2008Shuanglong Group Co., Ltd was estalished officially
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2009Developed the first 30000L Horizontal Ribbon mixer successfully
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2010Annual output achieved 1000 sets. Became the top mixer manufacturer with the highest sales in China
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2011Achieved export ratio takes up 30% of total sales
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2014Developed Chocolate Refiner sucessfully
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2015Yancheng Explosion-proof Motor Company successfully listed on the New Third Board
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2018Developed the High-temperature Cladding Kettle System for anode materials of lithium batteries
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2023Overcoming impact of the pandemic, group's revenue has broken through 1 billion
Services
S&L: Your Trusted Partner in Industrial Powder Processing
At S&L, we specialize in high-performance powder processing equipment, delivering precision, reliability, and efficiency to industries worldwide. Our commitment goes beyond manufacturing—we ensure seamless integration, optimal performance, and long-term value for your operations.
Expert Consultation – Tailored Solutions for Your Needs
No matter your mixing challenge, S&L’s experts are here to help. Simply share your requirements, and we’ll design the perfect solution for you.
Key details we’ll discuss:
Key details we’ll discuss:
- Material Specifications: Type of powder, particle size (mesh), density after mixing (kg/L)
- Process Needs: Batch size (kg), liquid additives (yes/no), container pressure (if applicable)
- Operational Setup: Voltage, frequency, phase, mixing method (post-loading or in-process)
With data-driven insights and industry expertise, we guarantee optimal mixing performance—every time.
Comprehensive Training – Maximize Your Equipment’s Potential
To ensure peak performance and longevity, we provide:
✔ Detailed user manuals tailored to your equipment
✔ On-site or remote installation & debugging guidance
✔ Best practices to boost efficiency, reduce downtime, and cut operational costs
Our goal? To make sure your team operates with confidence and expertise.
Genuine Spare Parts – Minimize Downtime, Maximize Uptime
Unexpected breakdowns hurt productivity. That’s why S&L stocks critical spare parts for rapid replacement.
Need support? Provide:
Need support? Provide:
- Equipment model & serial number
- Specific spare parts required
We’ll respond within 24 hours—because your production shouldn’t wait.
24/7 Technical Support – Fast, Reliable, Problem-Solving
Equipment issues? We’ve got your back.
Contact us with:
Contact us with:
- Equipment type, model, and serial number
- Description of the issue
Our experts will deliver swift, actionable solutions to keep your operations running smoothly.
Pilot Testing – Reduce Risk, Optimize Results
Before full-scale production, validate your process with our paid lab services:
🔬Mixing experiments & feasibility analysis
📊 Data-driven insights for smarter decision-making
🛠 Expert guidance on scaling up production
Minimize uncertainty. Maximize success.
Why Choose S&L?
✔ Industry-leading powder processing technology
✔ End-to-end support—from consultation to after-sales service
✔ Fast response, minimal downtime
✔ Customized solutions for your unique needs
Let’s innovate together. Contact S&L today and experience the future of efficient powder processing.