As a state-holding company, Jiangsu Suzhou Purification Technology Co., Ltd or Suzhou Purification Engineering Installation Co., Ltd is affiliated to and as the key enterprise of Jiangsu Suzhou Porification Group Company. As a domestic and famous company, We are the earlist involved in the design, manufacture, installation & commissioning of air filtration plus air conditioning system. We hold the Qualification of Grade A, for contracting of mechanical and electric equipment installation, and Grade B, for air filtration and air conditioning project, and for design & construction of decoration in buildings.
In the company, many senior engineers, engineers and technicians form a team of specialized technicians of installation, construction and project management.
with over 30 architects who are holding national qualification Grade 1 or 2, we have a very skillful and hard-working team for construction and associated work. They accumulated abundant experiences in design, manufacture, installation and commissioning through long term of practices.

In recent 40 years, through exploration of top technology in our era and endurance in seeking for better and improvements, we contracted and accomplished satisfactorily over 2500 projects in air filtration plus HVAC system.

Our customers are distributed in a wide range of fields, including mechanism, electronic information technology, aeronautics and aerospace, solar energy, biomedicine and biosafety lab, foodstuff, medical care and clean operation room, precision instrument, and automotive. We make good and fruitful cooperation with famous scientific research institutions and universities.
Thus, the interactive development among manufacture, education and research are achieved.
By right of the advantage of brand name "Sujing" and the technology, we are penetrating international market. We have projects located in USA, Russia, Canada, India, Iran, Bangladesh, Vietnam, Moldova, Georgia and Zambia.

As a high-tech company with stronger capability in innovation in Jiangsu Province, we own several patents.

We passed ISO 9001: 2000 quality management system and ISO 14001: 2008 environment management system. Therefore, with up-to- standard quality assurance system and strict control system, full-scope services are provided to the customers' satisfaction. The customers' requirements for quality in each project or product are ensured. At the same time, the essential national policy of environmental protection, pollution control & prevention, and environmental quality improvement are materialized.