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       Acoustics and Air Testing Laboratory Company Limited (A+A)*L Located at Room 422, Leader Industrial Centre, 57-59 Au Pui Wan Street, Fo Tan, Shatin, N. T., Hong Kong. It was incorporated in June 1995 and registered as a private company limited by shares. (A+A)*L is a unique idenpendent testing laboratory in Hong Kong, equipped with sophisticated instruments according to international standards (ASTM, ISO) to provide a full range of Acoustics and Air testing services. (A+A)*L has been accredited as HOKLAS laboratory by the HKAS Executive and has been assigned registration number 122. 
 聲學及空氣測試實驗室有限公司 
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       HOKLAS Accredited Laboratory Certificate  | 
    
      
       HKIAS Accredited Inspection Body (Type A) Certificate  | 
    
      
       ISO 17025 Laboratory Quality Management Certificate  |