関連ワード:  transportation hsn code 6 digit    freight hsn code 6 digit    freight hsn code 6 digit gst rate    transportation charges hsn code 6 digit    transport service hsn code 6 digit    freight charges hsn code 6 digit    freight outward hsn code 6 digit    freight inward hsn code 6 digit    freight exp hsn code 6 digit    freight charges hsn code six digits