A customer wants to know what the grid ratio of our X-ray grid is

A customer asked about the X-ray grid. The customer’s requirements are: size 15*18, focal length: 1.8 meters, grid ratio 14:1, mainly used for pneumoconiosis pictures on chest radiographs.
Our X-ray grid is imported from South Korea JPI. According to its requirements, the x-ray grid density is at least 130 lines/inch or 150 lines/inch. This price is more expensive and needs to be customized. If the grid ratio of the X-ray grid is 14:1, it is necessary to further determine whether the Korean manufacturer can make a special order, because the grid ratio of the X-ray grid can reach 12:1. The custom processing time is at least 40 days. Let the customer finally confirm whether it is 130 lines/inch 12:1 or 150 lines/inch 12:1. In addition, with regard to the medium-speed intensifying screen, our company only produces domestically and does not import it. Customers are advised to contact the intensifying screen manufacturer directly.
Finally, the customer decided to purchase an x-ray grid with a size of 15*18, a focal length of 1.8 meters, a grid ratio of 12:1, and a grid density of 150 lines/inch. Sign a purchase contract with the customer, the contract stipulates that the goods will be shipped within 40 days, and the goods will be shipped after payment.

Author：Lillian