蓝色燃气喷火枪气罐

写实产品摄影，一只直立放置的蓝色圆柱形燃气罐，顶部为黄铜色金属喷火枪头，细长弯管向上倾斜，末端为黑色喷嘴，阀体带小旋钮；罐身印有白色说明文字，靠近底部有一条白色横线和一个带放射状图案的三角警示标，蓝色漆面有轻微划痕和磨损。白色纯净背景，主体居中，完整展示全高，竖向长幅构图，约1:4比例，柔和均匀的摄影棚布光，金属与漆面质感清晰。

Realistic product photography of a single upright blue cylindrical gas canister with a brass-colored metal torch head on top, a long slender bent tube angling upward ending in a black nozzle, and a small control knob on the valve body. White printed instructions on the canister, a white horizontal line near the bottom, and a triangular warning label with a radial fan pattern, blue paint with slight scratches and wear. Plain white background, centered subject, full-height view, tall vertical composition, approximately 1:4 aspect ratio, soft even studio lighting, clear metal and painted surface textures.