Sufu production markings cannot be identified from the front name alone. Compare rear panel with container base, then inspect closure area and carton flap for a narrow dot-matrix line.
What should a clear photo of the narrow dot-matrix line on Sufu show around rear panel or container base?
Start with rear panel, container base, closure area and carton flap. Keep narrow dot-matrix line tied to the surface where it appears, and record the surface name with the photograph instead of saving an isolated number.
Which package numbers should not be joined to the Sufu narrow dot-matrix line on rear panel?
For this Sufu package, treat barcode, size, shade or scent, distributor information and PAO as separate from the narrow dot-matrix line. Compare narrow dot-matrix line at rear panel with any variable print at carton flap; a retailer sticker should not be treated as a manufacturer-applied variable line.
Can the Sufu mark on rear panel or container base explain every change in odor, colour and seal?
For Sufu, a narrow dot-matrix line on rear panel or container base is only a timing clue. Record any second variable mark on closure area separately. Assess odor, colour, seal, dispensing and storage history directly.
Reading Sufu date and lot-marking guide
Before you rely on the decoded date
Start at rear panel, then move through container base, closure area and carton flap. Copy narrow dot-matrix line as one uninterrupted line, keeping its print style and exact surface noted while keeping the container and carton paired.
Do not merge narrow dot-matrix line with fixed retail copy such as the barcode, size, shade, scent, distributor number or PAO. Compare rear panel with carton flap while keeping the container and carton paired before assigning a purpose to either line.
Common lookup mistakes
Record a wide Sufu package view before the close-up of narrow dot-matrix line. Add rear panel, container base and closure area in sequence and avoid mixing components from a set.
Check odor, colour, seal and dispensing directly after opening Sufu, regardless of the package date. If rear panel and carton flap do not agree, retain both locations and treat a replacement carton as separate evidence; an estimated date does not override deterioration or uncertain storage. Note the product format before comparing two printed lines.
What to check next for Sufu
For Sufu, combine the decoded date with product type, PAO, storage, and seller context before deciding whether to open, keep, replace, or buy.
Methodology
Understand what the checker can prove
See how Lot Date estimates production timing, where precision drops, and when official packaging should override the result.
Continue with the check that matches the product: find the lot number, review expiry or PAO, separate the batch code from the barcode, or assess sunscreen and fragrance more carefully.
Cosmetic Batch Code Lookup: Find the Right Code
Find the cosmetic batch code on your box, bottle or tube. Separate the lot from barcodes and shade numbers, then choose the brand to check production.
Enter a cosmetic batch number with its brand to check production age. Follow the result with product-specific expiry, unopened-life and PAO instructions.