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国外称划时代的表面处理技术——大可乐(Dacrotized)处理,是一种铬酸作为粘结剂,由水溶性片状锌作为底漆,进行防锈处理的方法。这种新型表面处理技术,由美国综合化学会社,为解决北美或加拿大雪地上洒盐所招致汽车部件的腐蚀,耗资50亿日元,经10年时间开发,自1972年开始被采用以来,目前在全世界24个国家享有专利权。据1984年7月统计,目前日本用该技术进行表面
Abroad called epoch-making surface treatment technology - Dacrotized (Dacrotized) treatment, is a chromic acid as a binder, from the water-soluble zinc flake as a primer, anti-rust treatment method. This new surface treatment technology by the American National Synthetic Chemical Society, in order to solve the North American or Canadian salt spray on the snow caused by corrosion of automotive parts, cost 5 billion yen, after 10 years of development since 1972 has been adopted since the current Patents are available in 24 countries around the world. According to the statistics of July 1984, Japan currently uses the technology for its surface