Company Introduction

Tongxiang Yongguan Jiamay Surface Treatment Co., Ltd. is a technology-oriented surface treatment processing unit that integrates production and committed to the development of new processes. In order to achieve high-quality products, Japanese and German technologies are constantly updated and improved: stainless steel oxidation blackening technology. Since introduction in 2013, it has been 11 years. Countless products have been exported, including optical matte accessories, fasteners, precision machined parts,ging, high-end springs, and a series of car parts such as BYD and Volkswagen。

Product Catagories

Blackening Treatment for Stainless Steel and Copper Materials (Fasteners, Rigging, Castings, Precision Machined Parts):High surface hardness: 6H grade.Strong adhesion: 5A grade.Clean, oil-free, and environmentally friendly, compliant with EU RoHS (SGS report available upon request).Thin coating (3-8 μm), minimally impacting thread acceptance with go/no-go gauges.Resistant to acids, alkalis, and seawater corrosion, verified by corrosion tests.Heat-resistant up to 400°C without peeling.Effectively prevents thread locking and provides lubrication, with a friction coefficient between 0.19 and 0.25.Excellent salt spray resistance: starting from 120 hours, up to 300 hours, and can achieve 1000 hours.UV-resistant, colorfast, and aging-resistant.Consistent color across multiple production batches.Contact: 18661897293 / 18653205193