Rainbow Hinge Tech

Company Description

Self-closing Hinge combined with function of door closer and hinge which can be applied to steel and wood doors with all solution to the defects arising out of wood doors: distortion of door, visual appearance, space utility and limitation in case of installing door closer.A standard set consists of 2-spring-hinge and 1-hydraulic hinge (not less than 70-kg of door).The spring hinges generate closing force by regulating tension of spring torsion. The hydraulic hinge controls force from spring hinges by regulating oil flu, repelling power of oil pressure, for smooth and safe closing.