We are one of the leading commercial laboratories in Hong Kong with HOKLAS recognition since 1990.   Our businesses are wide-ranging covering not only testing of construction materials, air/water quality, food, Chinese medicine, and pharmaceutical products, but also ground investigation, material inspection, as well as equipment calibration.  In diversification, Castco Certification Services Limited, established as an independent HKCAS accredited certification body, provides certification service to our clients on quality and environmental management system as well as product conformity in various construction disciplines.  

In supporting our continuous expansion, we are looking for passionate and motivated individuals to join and grow with us.