Even in harsh environmental conditions, but also to maintain a better performance and longer service life. FEATURES--Made of use surface treatment technology for protection, fading protection and ensures long-term use. 2Pieces Copper Force Gas Spring Cabinet Hinge 3-20kg Struts Door Lift Support Rod Hydraulic Kitchen Cupboard. FEATURES：Round metal mounting plate, contact with the counter area is larger, three-point positioning, installation more solid. Full copper oil seal, full buffer design, solid design to ensure long-term use is not deformed, not rust., Manufacturer: mangchengsm