YUAN SINE SPRING primarily mass manufactures wave spring with high quality and competitive price. YUAN SINE SPRING's custom torsion springs series include multiple types. YUAN SINE SPRING large extension springs is produced meeting the international standards for electric appliances. It has been sent to the testing organization for quality testing, and it has passed the RoHS, SAA, CB, CCC and ENEC certification. The product features good toughness and is not easy to break. The product is fully adapted to market trends and has great potential for wide application. It is a popular choice because of its chemical resistance.
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