About us

Share Button

Our History:

COSO was founded in 1996 by Managing Director Steven Hantos to meet the needs of commercial and medical businesses in Sydney accessing a high quality comprehensive property cleaning and maintenance service.

From 2009, COSO opened new company in Viet Nam under establishment certificate No. 4104010369 issued by Ho Chi Minh City Department of Planning and Investment. Soon after establishment, COSO VINA was granted the permission to receive technology transfer as well as machines and equipments of the world’s leading cleaning firms such as Windsor and Tennant (USA), Dulevo and Filmop (Italy), Klenco (Singapore), Peerapat (Thai Lan), Unger and Karcher (Germany)

COSO VINA has provided cleaning services to series of office buildings, including but not limited to Thermtrol Company Limited (VSIP), Great Easterm Resins Industrial Company Limited, Bio-Pharmachemic Joint Venture Company…

Regular cleaning services:

The offered services is the full package , including manpower, tools and equipments, specialized chemical, for whole the public areas. Depending on each area, working frequency can be daily, weekly, monthly or periodically/p>

Quality Control:

We take pride in the fact that we are constantly monitoring our own performance. We strive to have the best people, the best equipment, the best training and the best records system so that we can deliver the best service.

Our Quality Management System is audited and certified by SAI Global to the ISO 9001:2008 Standard. Certification No:QEC27969


We choose to only use products and equipment which are of high performance, have a minimal impact on our environment whilst complying with Australian Occupational Health and Safety standards..


We provide regular training sessions and formal accreditation for our cleaners, property maintenance personnel and `back of house’ staff ensuring that we meet or exceed the standards of “best practice” across our business.

We Offer:

Highly experienced Management team. Strong focus on Client satisfaction and operational areas. 24/7 availability and comprehensive emergency Services. A totally professional and dedicated team. Commitment to Occupational Health and Safety requirements. Continuous improvement of our services and systems.

0916 718 278