Your Premium Manufacturer of Rotary Evaporators
Glass Reactors and Temperature Control Systems

33+ Years Experience

About GWSI

Leading Manufacturer Of Rotary Evaporators, Glass Reactors And TCUs

GWSI is the brand name for Zhengzhou Greatwall Scientific Industrial and Trade Co., Ltd and we has 33+ years manufacturing experience on rotary evaporators, glass reactors , lab vacuum pumps and temperature control systems. You can customize your glass reactors and import explosion proof rotary evaporators & glass reactors from GWSI.

GWSI Certificates

GWSI is Postgraduate Internship Base of Zhengzhou University and Zhengzhou Light Industry University.

GWSI established laboratory together with Shenyang Pharmaceutical University and Inner Mongolia University respectively.

GWSI is  European Designated Laboratory Equipment Supplier.

GWSI Factory

240+ workers in GWSI factory to produce rotary evaporators & glass reactors and more lab instruments in high efficiency.

Mini rotary evaporator workshop, large scale rotary evaporator, glass reactor workshop and temperature control products workshop.

Standardized process workshop such as sheet metal workshop, low temperature workshop and assembly workshop.

GWSI Team

GWSI has 5 senior engineers and 25 engineers to develop new function of rotary evaporators and glass reactors.

Professional technical support team including product design engineers, product development engineers, production support engineers and program engineers.

GWSI has Product Test Center to provide real test data for product application.

Global Clients That Trust GWSI

GWSI is WTO designated research company
GWSI glass reactor client logo
GWSI client logo
GWSI lab instruments client logo
GWSI medical client logo
1988
GWSI developed Water Circulating Vacuum Pump SHB-III

GWSI founded as Zhengzhou Greatwall Scientific Industrial and Trade Co., Ltd and successfully developed Water Circulating Vacuum Pump SHB-III.

1994
GWSI Water Circulating Vacuum Pump

Water Circulating Vacuum Pump won China Golden List Technology and Products.

1997
the first -80℃ low temperature coolant circulating pump in laboratory equipment industry

Successfully developed the first -80℃ low temperature coolant circulating pump for laboratory equipment industry in China.

2001
GWSI Recirculating Chillers

GWSI developed -100℃ low temperature recirculating chillers.

2004
GWSI was recognized as a high-tech enterprise for lab equipment

GWSI was recognized as a high-tech enterprise for lab equipment.

2005
GWSI Recirculating Chillers
GWSI successfully developed -120℃ low temperature coolant circulating pump.
2009
GWSI invented China first Cooling Heating Circulator

GWSI invented China first Cooling Heating Circulator to provide high & low temperature circulating liquid.

2012

GWSI successfully developed the first lifting glass reactor in China.

2014
GWSI new R&D centre factory

GWSI new R&D centre factory was put into use

2019
GWSI standardized three-storey workshop
6600㎡ new standardized three-storey workshop was put into use
2020

Recognized as a provincial enterprise technology center.

2021
e-commerce demonstration enterprise

Recognized as a provincial e-commerce demonstration enterprise.

2022
GWSI invent new types of rotay evaporator

GWSI invent new types of rotay evaporator.

GWSI Sales Network

GWSI Sales Network image

GWSI have rich experience in cooperating with agents, distributors & brands manufacturers and can provide product & technology and after-sales training.

For overseas brand manufacturers, if you want to use your brand to sell our products, GWSI can provide OEM&ODM services.

As a manufacturer with R&D capabilities for more than 30 years, our products are constantly updated, and we have sustainable supply capabilities.

Let GWSI Support Your Need Now!

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