A high-resolution official round ink stamp for an independent construction testing laboratory, sharp lines, vector style, monochromatic dark blue ink color, flat design, perfectly round shape, text on the outer ring "ЦЕНТР НЕЗАВИСИМОЙ СТРОИТЕЛЬНО-ТЕХНИЧЕСКОЙ ЭКСПЕРТИЗЫ", text on the inner ring "АНО ЦНСТЭ", a clean minimalist geometric logo representing a caliper tool or a technical building shield in the center, isolated on a solid sharp white background, 8k --no shadow, paper texture
