Hlau Caij nplooj ntoos hlav pob khawm yog ua los ntawm Nickel-plated hlau nrog lub ntsej muag ci, haum rau cov rooj tog zaum rooj tog

Hlau caij nplooj ntoos hlav hinges yog ib qho tseem ceeb hauv kev tsim thiab kev ua haujlwm ntawm cov rooj tog zaum rooj tog rooj tog. Cov pob khawm no yog ua los ntawm npib tsib xee-plated steel, cov khoom siv ruaj khov thiab muaj zog uas tuaj yeem tiv taus hnav thiab tsim kua muag ntawm kev siv txhua hnub. Tsis yog lawv ua haujlwm nkaus xwb, tab sis lawv kuj muaj lub ntsej muag ci ntsa iab uas ntxiv kev kov rau txhua qhov chaw ua haujlwm.