Adjustable Middle Duty Hydraulic Automatic Commerical Door Closer

Adjustable Middle Duty Hydraulic Automatic Commerical Door Closer. Two-Way Speed Control: Adjustable closing speed for both opening and closing directions. 5-Year Mechanical Guarantee: Comprehensive 5-year warranty covering mechanical defects. UL and CE Certified: Products meet international safety standards including UL, CE, and EN. High Durability: Passed 500,000 cycle durability test for long-term reliability. Wide Temperature Resistance: Operates effectively in temperatures from -30 to 60 degrees Celsius. OEM and ODM Support: Professional customization services for famous brands and unique designs. Free Sample Evaluation: Three free samples provided for evaluation upon request. Universal Door Compatibility: Suitable for wooden, metal, fire-rated, plastic-steel, and aluminum doors.