Wan Sheng International Trade Co., Limited

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SERVICES

Air Tightness Test

Air tightness test for all kings of buildings, like hospital, passive houses or even a refuge isand.

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Enclosure Integrity Test

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Enclosure Integrity test for all kinds of rooms protected by clean agent extingushing system, like battery rooms, data centre, archives rooms, ship cabins, and containers.

Retrotec began as a blower door manufacturer in Ottawa, Canada. But, by 1984, they grew to include offices in the US. Now, Retrotec designs and delivers bolwer doors and duct testers for testers and researchers in different industry.

RETROTEC

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NEWS

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Wan Sheng International Trade Co., Limited

With the service tenet of "honesty and high quality", the company has been the first in the industry to pass the ISO9001:2000 quality standard system certification, and has been constantly improving its quality by learning from foreign advanced scientific quality management ideas

넶72 2021-01-27
Wan Sheng International Trade Co., Limited

With the service tenet of "honesty and high quality", the company has been the first in the industry to pass the ISO9001:2000 quality standard system certification, and has been constantly improving its quality by learning from foreign advanced scientific quality management ideas

넶37 2021-01-27
Wan Sheng International Trade Co., Limited

With the service tenet of "honesty and high quality", the company has been the first in the industry to pass the ISO9001:2000 quality standard system certification, and has been constantly improving its quality by learning from foreign advanced scientific quality management ideas

넶30 2021-01-27