Xiyi Coating Technology Co., Ltd. in Wuhan provides metal vacuum surface coating services, applying plasma‑assisted technology in a vacuum environment to vapor‑deposit ceramic coatings that enhance the performance and durability of metal tools and precision components. Their product line includes diamond‑like carbon (DLC) hard low‑friction coatings and aluminum‑chromium nitride (AlCrN) hard wear‑resistant nitride coatings. The coatings feature low deposition temperature, zero thermal stress, high adhesion, ultra‑hardness, low friction coefficient, excellent wear and corrosion resistance, uniformity, high thermal conductivity and biocompatibility. Applications cover metal cutting tools, molds, automotive parts and other precision parts.