1.4mm Spring 2.Material: 45#,60#,65#,C70DA,C82DA,70#,80#,72A,72B,82B. ... South Korea, Israel, Malaysia, Pakistan, Thailand, Philippines, Sri Lanka, Iran, Syria, Brazil, South Africa, Turkey, India, Bangladesh,5. Our other ... , mattress spring steel wires.6. Our other material: 60#,65#,C70DA,C82DA,70#,80#,72A,72B,82B.7. ... Spring Products 4mm Spring Of Grade 45(45#,60#,65#,C70DA,C82DA,70#,80#,72A,72B,82B)