• Model NO.：DF2104710
• Product Name：Music Wire Extension Springs
• Business Mode：Factory OEM
• Material Standard：GB 4357-09 or Equivalent
• Wire Range：From Min 0.1mm(0.004inch) to Max 12mm(0.48inch)
• Winding Direction：Left and Right
• End Type：Different Hooks Available
• Surface Treatment：Zinc Coating
• Coating Thickness：8~10 Micrometer
• Testing Method：Random Sample Inspection
• Tolerance：GB Standard, Grade II or as Per Your Requirement
• Spring Rate Tolerance：+-3%~10%
• Aql Level：Aql 1.0
• Packing Method：OPP Bags with Blank Carton
• Normal Carton Size：23X23X31,Cm with No Mark
• Certificate：ISO9001, SGS, RoHS, CE, Ts16949
• Transport Package：Carton and Outer Wooden Case
• Specification：custom sizes
• Trademark：DOFO
• Origin：Wenzhou, China
• HS Code：7320909000
• Production Capacity：1, 000, 000 Pieces Per Month

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