Metal Extension Spring ?

Specific	Metal Extension Spring
1.Wire?Dia.?	0.08-8.0mm
2.Material	SUS,SWC,SWP
3.MOQ	5,000pcs
4.MPN	1000,000pcs/Even?higher
5.Endurance?Limit	5,000,000?Times
6.Engineering	Product?Analysis,Design,Test,Validation?ect
7.Usage?of?spring	?Tooling ,Auto ,Industrial
8.Payment?Terms	T/T,L/C,Western?Union?or?Escrow.
9.Type?of?Shipping	By?Sea,Air,Express.?
10.Lead?Time	Within?7-15?working?days?after?order?confirmed,?also?based?on?the?order?quantity.
11.Processing?Craft	Material?purchased-production-heat?treatment-surface?treatment-quality?detection -package-shipping.
12.Heat?Treatment	Tempering,?Stress?Relieving,?Spheroidizing.
13.Packing?of?spring	PE?bags,Cartons,Pallets.
14.Standard	ISO9001-2008,?SGS?Certificate,ROHS?Report.
15.Test?Equipments	Projector?,?digital?hardness?tester,digital?torsionstrength?tester.digital?tension?and?compression?strength?tester?. ?elasticity?tester.?life?tester?,?salt?spray?test?machine?etc.
16.Quality?Control	1.PPAP,SPC,FMEA,MSA?quality?management. 2.Tolerance?control?:?DIN,?JIS?Standard. 3.Manufacturing?processes?inspection?per?hour?and?per?batch. 4.Traceable??management??thoughout?all?process?from?raw?material?to?customers.
17.Advantage	We?are?good?at?producing?highdifficult,extremelyaccurate,?reliable?products,and?providing?innovative?solution,? Solid?service?for?you!?

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18.Pls?offer?us?your?spring?spec.,we?can?make?spring?based?on?your?requirements.?????

19.Discount?offered?if?with?large?order?quantity.

20.100%?return?goods?or?refund?payment?if?quality?problem.

21.Established?in?2004,but?the?company’s?employees?have?20?years?of?spring?production?technology?experience.?

? ? ? ? ? ?Donva spring? ? 1>9 years of experience in producing springs
2>design as customer's requirement
3>competitive price good quality and good service
4>specialized in producing precision small spring with Wire Dia from 0.1mm-5.0mm
5>OEM's accept ? ? ? How to order
1.you send me your drawing or sample
2.we offer you a fixed price
3.when you confirmed the price,we start to prepare the sample
4.after confirmed the sample,you place an order
5.after order?received,service is important?during?using period ? ? ? We import the most sophisticated computer compression spring machine from Taiwan; it can ? do 100 percent inspection to spring length, which ensured the spring quality stable and precise. ? ? ? ?
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