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Text Content

 * Home
 * Products
   * Rotary Evaporators
   * Glass Reactors
   * Temperature Control Unit
     * Dynamic Temperature Control System
     * Recirculating Chillers
     * Cold Traps
     * Heating Circulators
   * Vacuum Pumps
 * Applications
 * Manufacturing
 * Quality
 * About
   * About Us
   * FAQ
   * Blogs
 * Contact

0





A MANUFACTURER OF ROTARY EVAPORATORS, GLASS REACTORS, VACUUM PUMPS AND TCUS

Zhengzhou Greatwall Scientific Industrial and Trade Co, Ltd (GWSI) manufactures
glass reactors, rotary evaporators, temperature control instruments, and vauum
pumps for laboratory and industrial applications. Offering you one-stop
solutions, we handle OEM customization using high-end components to guarantee
optimum functioning.

 * 30+ Years Experience
 * 90+ Patents
 * ODM/OEM Service
 * One-stop Solution


FEATURED PRODUCTS

GWSI produces rotary evaporators, glass reactors, temperature control units and
vacuum pumps for heating, distilling and mixing liquids. Every component used
for our products is of premium material and has been tested to guarantee longer
service life.

 * ROTARY EVAPORATORS
   
   
   
   Laboratory Rotary Evaporator
   
   Up to 2L
   
   Large Rotary Evaporator
   
   5L  10L  20L
   
   Industrial Rotary Evaporator
   
   50L
   
   

 * GLASS REACTORS
   
   GWSI glass reactors provide a stable and long-lasting vessel for chemical
   synthesis and other processes. We offer 1L to 100L volume glass reactors as
   well as different add-ons for laboratory or industrial applications.

 * TEMPERATURE CONTROL UNIT
   
   Used to heat, cool, and manage the temperature of fluid for a specified task,
   temperature control units act as vital pieces in several industries including
   pharmaceutical, chemical, and industrial fields.

 * VACUUM PUMPS
   
   Our vacuum pumps are designed for drying, evaporation, distillation,
   crystallization, and filtration pressure purposes. Suitable for colleges,
   universities, chemical, research institutes, food, and agriculture.

Explore All Get A Quote


YOUR BENEFITS

Operating for longer periods under extreme conditions, our temperature control
products reach your markets with their quality-assured safety features that
minimize maintenance costs.

 * PROFESSIONAL CONSULTATION
   
   Our experts offer experience and data-based advice about our product line.

 * OEM & ODM SERVICE
   
   We follow your specifications and ideas in formulating long-running
   temperature control products.

 * QUALITY PRODUCTS
   
   Meeting strict standards, our product line has been inspected for flaws and
   optimized to function.

 * PROVED SAFETY
   
   From over-temperature alarms to overload protection, our products are for
   safe lab and industry uses.

 * COST-SAVING
   
   Through our control over the production and the long service of our product
   line, you will spend less.

 * ON-TIME RESPONSE
   
   Within 24 hours, we provide an immediate reply to all of your questions and
   prioritize requests.


PROFESSIONAL AND RELIABLE MANUFACTURING

Glass assembly and the installation of key components such as water baths and
machine heads are joined with appearance inspections to confirm the safety and
cleanliness of our product line.

 * PARTS ASSEMBLY
   
   We put together the housing unit of the evaporators that will serve to hold
   other smaller part.

 * ELECTRICAL PART ASSEMBLY, BATH ASSEMBLY
   
   We connect the water bath, wiring, and other parts of the evaporator.

 * GLASS ASSEMBLY INSTALLATION
   
   We connect the flasks, condenser, and other glass components of the
   evaporator to the housing.

 * PERFORMANCE AND ELECTRICAL SAFETY TEST
   
   The rotation performance and electrical components are inspected. Our
   engineers also ensure the vacuum performance of the flask can reach 0.002MPa.

 * PACKING AND SHIPPING
   
   We dismantle the evaporators to properly place each component in the
   packaging and ship it out to customer

Explore More


STRINGENT QUALITY CONTROL

In compliance with ISO9001 standards, we maintain strict quality control through
tests to determine product strengths and maximize functionality.

 * Glass Quality Test
 * Pressure Test
 * Sealing Performance Test
 * Operation Performance Test

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 * 2
 * 3
 * 4


WHY CHOOSE GWSI

Taking over 100 projects in worldwide markets, GWSI’s line of evaporators and
reactors work well for laboratory settings. We also provide temperature control
units that are easy to use for industrial applications.

PREMIUM MATERIALS

Importing quality raw materials results in more functional, long-lasting
equipment for your applications.

STRICT QUALITY CONTROL

We trust only qualified suppliers and conduct thorough inspections of materials
and components.

QUICK DELIVERY

In less than 30 days, we are able to deliver customized orders within your
schedule to meet demands.

RESPOND WITHIN 24 HOURS

We respond quickly to immediately comply with your requests and provide timely
updates.

30+ YEARS EXPERIENCE

Since 1988, our team combines machinery with reliable R&D to offer products
based on market trends.

ONE-STOP SOLUTION

We produce a complete line of temperature control equipment for laboratory and
industry applications.

PATENT PRODUCTS

Patenting our products minimizes plagiarism by competitors and secures your
rights to our product line.

CUSTOMIZATION SERVICE

We customize accessories and provide more options for better heating and cooling
effects.

PREMIUM MATERIALS

Importing quality raw materials results in more functional, long-lasting
equipment for your applications.

STRICT QUALITY CONTROL

We trust only qualified suppliers and conduct thorough inspections of materials
and components.

QUICK DELIVERY

In less than 30 days, we are able to deliver customized orders within your
schedule to meet demands.

RESPOND WITHIN 24 HOURS

We respond quickly to immediately comply with your requests and provide timely
updates.

30+ YEARS EXPERIENCE

Since 1988, our team combines machinery with reliable R&D to offer products
based on market trends.

ONE-STOP SOLUTION

We produce a complete line of temperature control equipment for laboratory and
industry applications.

PATENT PRODUCTS

Patenting our products minimizes plagiarism by competitors and secures your
rights to our product line.

CUSTOMIZATION SERVICE

We customize accessories and provide more options for better heating and cooling
effects.

PREMIUM MATERIALS

Importing quality raw materials results in more functional, long-lasting
equipment for your applications.

STRICT QUALITY CONTROL

We trust only qualified suppliers and conduct thorough inspections of materials
and components.

QUICK DELIVERY

In less than 30 days, we are able to deliver customized orders within your
schedule to meet demands.

RESPOND WITHIN 24 HOURS

We respond quickly to immediately comply with your requests and provide timely
updates.

 * 1
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OUR BLOGS

Read updates on the company and our projects in our blogs. Detailing a
comprehensive record of our successes and industry standards.



HOW DOES A CHILLER WORK

May 12. 2021 Learn More

INTRODUCTION ABOUT MAGNETIC STIRRER

Jan 08. 2021 Learn More

LABORATORY REFRIGERATION EQUIPMENT APPLICATION

Oct 15. 2020 Learn More


KNOW WHAT YOU WANT?

We have got an exceptionally passionate team here at Greatwall ready to help you
find possible solutions for optimum performance.

Ask For A Quote


NEED MORE SUPPORT?

Have any questions about our products or services? Our well-trained personnel is
at your disposal.

View FAQs

GWSI is a manufacturer of rotary evaporators, glass reactors, and temperature
control units for laboratory and industrial applications.

BE THE FIRST TO KNOW

Sign up to get regular product updates and promotion offer.

Δ



PRODUCTS &
SOLUTIONS

 * Rotary Evaporators
 * Glass Reactors
 * Temperature Control Unit
 * Vacuum Pumps

FAST LINKS

 *  * Applications
    * Manufacturing
    * Quality Control
    * About Us
    * FAQ
    * Blogs

COMPANY INFO.

 * No.1119, Science Avenue, Shangjie District, Zhengzhou China
 * +86-371-68005116(English)
 * +86-371-68000368(English)
 * info@zzgwsit.cn

 * 
 * 
 * 
 * 

ACopyright © 2021, Zhengzhou Greatwall Scientific Industrial and Trade Co, Ltd
All rights reserved.




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www.gwsi-online.com Open in urlscan Pro 50.116.1.174 Public Scan

Form analysis 3 forms found in the DOM

POST /#wpcf7-f60-o1

POST /#wpcf7-f122-o2

POST /#wpcf7-f141-o3

Text Content

www.gwsi-online.com Open in urlscan Pro
50.116.1.174 Public Scan

Form analysis
3 forms found in the DOM