The Introduction

 Reagents are set in the inner layer of double-layer glass reaction kettle, at the same time, vacuum can be taken out and mixing speed be adjusted. Interlayer can lead in refrigerating fluid, water and high temperature liquid to heat and cool the materials. It can be used in the experiment, middle-scale test, and production of chemistry, fine chemical engineering, biological pharmacyand synthesis of new materials. the products can be made into system devices with multi-purpose circulating circulating water vacuum pump, diaphragm bacuum pump, low temperature circulating pump, circulating cooler, constant temperature circulator, low temperautre cooling liquid circulating pump and closed cooling and heating circulating equipment.

 Standard wooden or carton boxes. Goods will be shipped by air or sea.

 Zhenghzou Greatwall Scientific Industrial and Trade Co, Ltd. is a company for scientific experimental instrument and industrial related equipments integrated with researching, developing, manufacturing, and managing. The company not only keeps promise in high quality to products and high service to consumers, but also pays more attention on technological innovation. Company was established in 1988 located in Zhengzhou, Henan. We have more than 25 years of experience for providing you high quality products. The number of employees is more than 200 people. The company products have more than ten series and one hundred types of lab equipments include multiple-use circulating water vacuum pump, rotary evaporator, glass reactor and so on. 

Workshops of Greatwall

* On March 23th, 2015,  "the Middle East Dubai Exhibition of Experimental Apparatus

     and Analytical Equipments” was opened in Dubai’s International Exhibition Centre

     (World Trade Centre). Our company was invited to attend the Dubai's exhibition

Why do you choose Zhengzhou Greatwall?

Our company was established in 1988, we have more than 25 years of experience for providing you high quality products. The company keeps promises and strictly abides by the contracts. It servers for development of education, science and industry based on high quality goods, excellent performance and flawless after-sales service. Our company has become the first enterprise passed ISO9001 International Quality System Attestation in the same domestic industry.

Where have we already sold?

At present, Zhengzhou Greatwall Company has multilevel cooperation relationship with domestic universities and scientific institutions. The domestic branch offices and business agents are distributed more than 20 areas. There are agents in Taiwan, Hong kong and Macau. For the international markets, the products of the company are facing over Asia, Europe and America now. There are our agents in Korea, Canada and India etc, Products are sold to the United States, Italy, and so on.

what' s our products' advantages?

A. Trustworthy brand, high quality and competitive prices between others.

B. Strictly quality management when producing.

C. Professional team work, from designing, developing, producing, packing and shipping.

D. After-sale services, we have one year warranty if there is quality problem, we will let us professional technicist to deal with our products’ problem.