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美國Eco Sensors  
Eco Sensors為一間集合研發、生產及銷售臭氣監測儀的公司，其重點產品如手提式臭氣檢測儀A-21ZX型、固定式臭氧監測儀C-30ZX型及OS-3型均成功打進在香港不同的臭氧檢測市場，例如空內空氣質素檢測、暖通空調系統及臭氧發生器檢測等領域。

China

Science Laboratories Ltd., Hong Kong, Guangzhou, Shanghai and Beijing Gas instruments, workplace safety, indoor air quality

Tel: 852-2543-7442

Shanghai ACS Co., Ltd., Shanghai Gas instrumentation

Tel: 86-21-663-02490/1/2

Eco Sensors Division of KWJ Engineering Inc. is the premier designer and supplier worldwide of low-cost ozone sensing instruments. These are used to monitor safety in the workplace, control ozone generators, monitor and control processes such as food production and storage, deodorization, sterilization, and measuring ozone dissolved in water. Our instruments are simple, user-friendly and inexpensive. We have also always designed and manufactured VOC (volatile organic compounds) instruments which continue to enjoy market acceptance. We have grown every year since our incorporation in 1991 and have been consistently profitable.

The majority of Eco Sensors' sales are through distributors and OEMs, so we don't know who or exactly how many end-user customers we have. We estimate that we have over 30,000 customers spread over North America, Europe and the Pacific Rim. Half our sales are export. Eco Sensors' products are sold by many specialty distributors and by ozone generator manufacturers and systems integrators.

Ozone Sensors
Eco Sensors Division of KWJ Engineering Inc. has been in this application for ten years, but through unique designs has many satisfied in diverse applications include monitoring ozone in air and dissolved in water at:

Water treatment plants
Water bottling plant
Ultra pure water plants
Aquariums
Air treatment for offices, conference rooms, casinos
Laundries for healthcare facilities and hotels
Fruit, vegetable and meat storage
Semiconductor manufacturing
Cooling towers
Electric power plants
VOC Sensors
This is Eco Sensors' original business, starting in 1992. There are many hundreds of customers. Almost are small businesses grouped into these applications:

Dry cleaners
Woodworking shops
Printers
Hospital sterilization
Chemical operations
Hazmat projects
Fumigations services
Filter verification
Design, Testing, Service and Manufacturing
All manufacturing is done in the USA. Most of our manufacturing is done in an ISO-9000 plant with electronics manufacturing done to IPC-610. As soon as possible, we have our products tested for CE conformity. Our ozone calibration lab has its analyzers calibrated traceable to NIST. We are dedicated to the customer, seeking always to provide the customer with the highest value. We never stop making improvements, minor and major, to keep our products state of the art.