Garden Tools,Garden Hand Tools,Weed Remover Tool,Garden Multi Tool NINGBO AOCHENG IMPORT AND EXPORT CD.,LTD , https://www.aulceln.com There are two types of scraping methods for flat plates. First, the natural distribution of the research points is scraped according to the traditional process; the second is that the research points are arranged in a row, the dots are arranged in a row and evenly, and are evenly distributed according to a special process. Taking the first-grade flat plate with the specification of 1000mm×1000mm as an example, the research points are arranged in an array to introduce the scraping process.