We have 30 years experience in heat treatment, specialized on screws, nuts, fasteners. 10 sets contious heat treatment furnace provide through harden, case harde and stress relief heat treatment. Awarded with ISO 9001:2008 specifies requirements for a quality management system & AIAG CQI-9 Special Process: Heat Treat System Assessment Step by step,Chong Ying Yang Cheng Industries Co., Ltd.has established a firm foundation based on its rich experience and is ready to face new challenges by utilizing its quality thinking in the new era.Now Chong Ying Yang Cheng Industries Co., Ltd. ultimate goal is to tailor our client's need, that our clients can draw on to produce optimal returns and profits. Chong Ying Yang Cheng Industries Co.,Ltd. had awarded with SGS ISO 9001:2008 specifies requirements for a quality management systemand had passed AIAG CQI-9 Special Process: Heat Treat System Assessment.Chong Ying Yang Cheng Industries Co., Ltd.strives to create products and innovations that benefit our clientsthroughout the world.Our clients now including: GM、VW、TOYOTA、FORD, etc.