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Custom Samples

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About Company

WNJ is a leading Custom Samples factory in China, is a global enterprise specialized in spring machines over 28 years, be a leader in the Chinese spring machinery in spring coiling machine, spring forming machine, spring grinding machine, spring temper furnace and other related equipment. The company is acknowledged as ONLY ONE new national technology enterprise of spring machinery industry in China, and devote ourselves to provide better product for customers CNC spring coiling machines and solution.  
The company has awarded as the only one national new technology enterprise in spring machinery industry, and also the main member of china spring association. 
-  Customer orientation is considered with customized solutions
-  Offer services to overseas customers with global agent
-  A powerful develop & design capability. Our own mould workshop enables the company to work on OEM/ODM projects easily
-  Over 200 skilled worker,50 technicians and one group of 20 engineers
-  Easy reconfiguration and adaptation to new production/manufacturing realities;
-  Main market: Europe, USA, Korea, Turkey, Argentina, Malaysia, Singapore, India, Japan, UK etc.
-   Imported Taiwan computer, Japan Sanyo Electric, Set up offices in many provinces in the country
-   Foreign agents throughout Asia, Europe, the Middle East, which can provide professional life after-sales service.

Latest News & Events

Building world class intelligent equipment brand in spring machine industry.

  • Compression Spring Design Guide: Formulas, Materials, and Manufacturing Tips

    --17th Aug 2026

    What You Must Get Right First in Compression Spring Design Five numbers decide the performance of every compression spring: wire diameter, mean coil diameter, number of active coils, free length, and the shear modulus of the wire material. Once these are set,...

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  • How to Bend a Wire: Manual Methods, Springback Math, and CNC Wire Bending

    --10th Aug 2026

    To bend a wire correctly, match the method to the material and diameter. For soft wire under 1.5 mm, grip close to the bend point, form around a mandrel, and overbend by the material's springback angle. For harder wire above 2 mm, or for any production run wi...

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  • Types of Springs: Compression, Extension, Torsion & More

    --03th Aug 2026

    The Main Types of Springs, Answered Directly There are six primary spring types used across industrial and consumer products: compression springs, extension springs, torsion springs, constant force springs, wave springs, and disc (Belleville) springs. Each is...

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  • CNC Spring Machine Guide: How Spring Makers Choose Equipment

    --27th Jul 2026

    What a Spring Maker Actually Needs From a CNC Spring Machine The short answer: a spring maker needs a machine that matches three things at once — the wire diameter range of the parts being produced, the axis count required for the spring geometry, and a contr...

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