Recently, "2020 Chongqing Lijia Casting and Die Casting Exhibition" was held in Chongqing International Expo Center (Yuelai). Shenzhen Comb Intelligent Equipment Co., Ltd. (hereinafter referred to as "Comb Intelligent"), a professional provider of X-ray nondestructive testing equipment, presented at the exhibition with an industrial X-ray testing equipment mainly for nondestructive testing of metal castings.