dormakaba SR 390 door coordinator, Smoke protection door coordinator, Door hardware wholesaler, dormakaba SR 392 concealed coordinator, mechanical door coordinator
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Dive into superior fire and smoke protection with MAN KIAN HARDWARE & TRADING SDN BHD's dormakaba SR 390 and SR 392 door coordinators. Perfectly designed for twin-leaf fire and smoke check doors, these non-handed products ensure the correct sequence of door closing.
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