ASSA ABLOY Testing Laboratory /Local/assaabloyopeningsolutionsSE/About_us/Other-assa-se-for-foretaget-bilder-atl-2.jpg ASSA ABLOY Testing Laboratory (ATL) is one of Sweden's best equipped centers for testing products for window and door constructions. Since 1996, we have been commissioned by different branches within the industry and are a partner to certifing bodies. ATL became an accredited test lab in 1998. Since then we have worked with many parts in the industry. ATL is also a partner of third party certification bodies. Our experienced staff performs daily tests in one of the country's most advanced test labs. Welcome to the ASSA ABLOY Testing Laboratory, ATL.