四川瑞致中鸿科技有限公司主要从事金属材料表面高防腐及超高防腐处理。公司联合高校开发出一种新型表层防腐技术——气体多元共渗复合工艺技术。采用特殊工艺，把多种元素渗入碳钢表层，如果处理的是螺栓与螺母，不会影响螺栓与螺母的配合。该渗层与金属基体实现冶金结合，即使螺栓与螺母多次装配与拆出，表层不会被破坏，不会影响防腐性能。制备出来的零件防腐蚀性能（中性盐雾试验评价10000小时）远高于不锈钢316（中性盐雾试验评价700小时）零件，且生产过程环保，无酸洗，无氢脆现象，目前该技术已处于世界领先水平。产品特别适合于海洋、户外潮湿等容易引起锈蚀的环境下的船舶、通信基站、电力铁塔等设备上的高防腐零件。

Sichuan Ruizhi Zhonghong Technology Co., Ltd. is mainly engaged in high anti-corrosion and ultra-high anti-corrosion treatment on the surface of metal materials. The company has developed a new type of surface anti-corrosion technology—gas multi-element co-permeation composite technology in combination with colleges and universities. A special process is used to infiltrate a variety of elements into the surface of the carbon steel. If the bolts and nuts are treated, the matching of bolts and nuts will not be affected. The infiltrated layer and the metal matrix realize the metallurgical combination, even if the bolts and nuts are assembled and disassembled many times, the surface layer will not be damaged and the anti-corrosion performance will not be affected. The anti-corrosion performance of the prepared parts (evaluated by neutral salt spray test for 10,000 hours) is much higher than that of stainless steel 316 (evaluated by neutral salt spray test for 700 hours), and the production process is environmentally friendly, without pickling, and no hydrogen embrittlement. The technology is already at the world's leading level. The product is especially suitable for high-corrosion parts on ships, communication base stations, power towers and other equipment in environments that are prone to corrosion, such as oceans and outdoor humidity.