In addition to the model, it can also be distinguished from the details: First, the genuine Wrigley is baked with the arrow trademark, such as the toilet. The trademark is located in the center of the water tank under the water tank cover, and the color is dark red in the glaze layer. Beware of similar counterfeit trademarks such as ARRCW, ARROM and ARROVV. Second, some models of water tanks have paint barcodes on the back. The first four digits are the product model, and this toilet is AB 12 18. Third, the outer packaging is labeled with white. Fourth, there is an AA certificate on the toilet tank. Fifth, there are instructions on the toilet feet. Sixth, the toilet lid is printed with an arrow mark. Seventh, the model and production date are printed on the water tank cover. Eighth, the anti-counterfeiting trademark of water parts is a fatal blow to fakes. Counterfeiters generally can't produce water by themselves, so it's very difficult to make fakes here. Most of them use Vidya water. The water used by Wrigley is light blue and marked with two arrows. Some toilets use imported Geberi water fittings.