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Associations & CertificationsClark has been a member of MANA (Manufacturers Agents National Association) since 1955. We are also a member of NFIB.
Halliday is a member of WEF (Water Environmental Federation) and the National Precast Concrete Association. Our ladder supplier ACL Industries, Inc. is an ISO-9001 registered company and all ladders are fabricated to OHSA 19.27 and ANSI 14.3 standards.
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