a. Set up two independent adjustable door closing speeds. By adjusting the two independent valves, the 180º full hydraulic control can be used to obtain the best valve speed and ensure safe locking;
b. With special torque design, the door closer adopts imported springs, imported high temperature, antifreeze and wear-resistant oil, which reduces the force of opening the door and makes the use easier and smoother;
c. The high-strength anti-leakage structure of the double spring door closer can prevent damage or oil leakage caused by closing the door under strong external pressure or strong wind, and prolong its service life;
d. The double spring door closer adopts die-casting aluminum alloy body, protected by three layers of bright paint to prevent oxidation;
e. Independent precision carving forming technology, eliminating the extensive die-casting.
f. Dynamic function (90º positioning) and (180º no positioning).