
Customized Size Compression Springs for Mattress. Customized Size Options: Available in various sizes including King and Queen to fit different mattress types. High Carbon Steel Material: Constructed with high-quality 2.0mm high carbon steel wire for durability. Medium Hardness Comfort: Designed to provide medium hardness suitable for all types of sleepers. Rolling Packaging for Export: Features easy export rolling packaging to facilitate global shipping. OEM and ODM Services: Offers full customization, minor customization, and flexible customization options. 100% Quality Inspection: All finished products undergo visual and function inspection before delivery. Flexible Payment Terms: Accepts LC, T/T, D/P, PayPal, Western Union, and small-amount payments. Fast Lead Time: Average lead time is one month for both peak and off-peak seasons.