Quality is checked at three stages: incoming material inspection, in-line production checks (shaft layup, curing, blade assembly), and 100% final inspection covering weight consistency, flex accuracy, finish, and alignment, plus drop and durability sampling. For market compliance we hold 【ISO 9001 / CE / REACH 】 and can provide test documentation for your target market. Tell us where you sell (US, EU, etc.) when requesting a quote so we confirm the applicable requirements before production.