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Description:1- Types available: compression spiral spring extension spring, torsion spring, calipers spring, central-raised spring, drum spring, pagoda spring, recantation spring, unique distance spring, square snail roller spiral power spring, window cracker spring, huge steel spring, plate spring, diaphragm spring, wavy spring, round spring, mold spring, aquare spring, flat spring 2- Special springs could be supplied according to customers' samples or specification drawings