Using the spring fasteners makes it more comfortable to sit on the sofa. A brand-new, cream-colored, 2-in-1 iron-plastic sofa spring fastener is what this item is made of. In normal use, it is not easily deformed. Environmentally friendly and economical, easy to install, long life, corrosion and water resistant. The front has curved circles for fixing the ends of the springs, the force area becomes larger and increases durability; the back has a wavy pattern, which is conducive to gun nail striking, increasing friction, not easy to slip nails custom-made self-research raw materials, better load-bearing, durable, reduce rattling, passed SGS durability test 80,000 times.However, the current sofa's spring buckle, coupled with the situation's poor solidity, will eventually appear off the hook and negatively impact the use of the sofa and spring bed.The sofa spring in question is an iron-plastic two-in-one sofa spring buckle. Its plastic restriction around the nailing holes prevents metal nails from slipping out of their holes and destroying the product's back, which is protected by an iron layer; the spring end's liner is firmly clamped inside of it. In this manner, the spring hook hangs in the plastic liner's square cylinder, With its unique design, the plastic can absorb the spring's vibration energy and increase the comfort of those seated by having a certain plasticity that acts as a shock absorber when the spring is squeezed and vibrated.reasonable structure and good application effect. May note: The first spring buckle is fixed in the frame, and the frame ends of the spring buckle are attached one by one, making the spring buckle a necessary component of the sofa and spring bed. and then the two ends of the spring hanging in the corresponding spring buckle one by one. However, the current sofa's spring buckle and the weak foundation will eventually show off the hook and have a negative effect on how the sofa and spring bed are used.