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. Easy to install, long lasting, corrosion- and water-resistant, and economical and environmentally friendly. The force area expands and the durability is increased in the front thanks to the curved circles used to secure the spring ends. The back has a wave pattern, which promotes gun nail striking, increases friction, prevents nails from slipping, is made from custom-made raw materials based on self-research, is better load-bearing, durable, and reduces rattling, and has passed the SGS durability test 80,000 times.The sofa spring in question is an iron-plastic two-in-one sofa spring buckle. Its plastic limit around the nailing holes prevents metal nails from slipping out of their holes and breaking the product's back, which is protected by an iron sheet.The outer pendant consists of a fixed end and a cylindrical spring end, the inner side of the fixed end is connected to the side of the spring end; the inner liner is also a cylindrical structure with the same shape as the inner cavity of the spring end; the liner is clamped tightly inside the spring end. In this way, when the spring hook hangs in the square cylinder of the plastic liner, the plastic has a certain plasticity, when the spring is squeezed and vibrated, it has a certain shock absorption effect, which can absorb the vibration energy of the spring and increase the comfort of people sitting down, with a novel design, reasonable structure and good application effect. May note: spring buckle is a sofa, spring bed necessary accessories, sofa, spring bed in the production process, the first spring buckle fixed in the frame, and the frame ends of the spring buckle one by one, and then the two ends of the spring hanging in the corresponding spring buckle one by one. 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.