The technology of "Laser A4 Trademark Brittle Encryption Anti-counterfeiting" is adopted, which is characterized in that there are three layers of radial rings rotating in opposite directions outside A.A4 The word "tech" is surrounded by clear and exquisite patterns drawn by computers and passes through a radial halo. C use a laser pen to illuminate the rotating halo of A4 inner layer from a certain angle on the right, and hold a piece of light-colored paper with good transparency in your left hand, keeping a certain distance above the trademark. On the paper, you will see the reflected laser encrypted double swallow mark. D. Tear off the anti-counterfeiting trademark sticker quickly, which will destroy the sticker, and fragile encrypted A4 genuine words will appear.

Second, because counterfeit products also adopt the above-mentioned A and B anti-counterfeiting features (which belong to surface anti-counterfeiting), it is difficult for non-professionals to distinguish authenticity. Based on this, since June 2000, a new code anti-counterfeiting technology has been adopted.

1. On the front of the color box, there is an eye-catching "code anti-counterfeiting of this product" sign, and a rectangular small piece with black characters on the yellow background (a small advertising color page with "code anti-counterfeiting" instructions for OK series 2D products). 2. There is a circular sticker printed with A4 trademark at the bottom of the mouse: a. Uncover the surface of the sticker printed with A4 trademark at the bottom of the mouse, and a 20-digit mouse anti-counterfeiting ID code will appear. Call the 800-82853 15 toll-free number prompted on the phone, enter the 20-digit mouse anti-counterfeiting ID code according to the telephone voice prompt, and press # to end. B. After entering the correct ID code, a system voice prompt will appear: "The product you are inquiring about is a genuine product produced by Dongguan Zhongyu Electronics Co., Ltd., thank you for using it. This survey has been completed. Please call 025-43 15365 if you have any questions. Goodbye. " 3. Each mouse has only one ID code, and each ID code can only be queried once.

Third, however, in order to make huge profits, counterfeit products also use the "code anti-counterfeiting" technology, but their identity codes are limited. When calling 800-82853 15 for free, there is no such identification code at all. In order to prevent accidents, Zhongyu Company has chosen another best and most advanced "digital anti-counterfeiting" technology in system protection since September 2000. It only modifies the telephone number on the original basis, and the operation method is the same as the voice prompt. Now, you can enter your ID number at 800-82893 15 for free, and consult at 025-3682686. Four, at the same time using the above several anti-counterfeiting technologies, keep the following points. 1. The color box is marked with the bar code mark and production standard number Q/ZY 1- 1999 approved for filing by China Article Coding Center, and the address, name and product name are approved for filing by the Technical Supervision Bureau. 2. The bottom of each mouse has a product model sticker and a "qualified seal" sticker; There is a small advertisement "Digital Anti-counterfeiting" on the box of OK series 2D products. 3. The external and internal manufacturing processes of the mouse are very fine, and there is no trace of cutting corners: the trademark printing of the mouse shell is clear and bright, and there is no shadow blur; Plastic products are tightly combined with uniform seams; The arrangement of circuit board parts is standardized, with standard solder joints, and the board body is neat and clean; The head of the mouse connecting cable is engraved with "A4" pattern, and each copper core wire in the cable has nylon wire to increase the tensile strength. 4. Exquisite packaging: the pattern imaging of color boxes, brochures, color pages and small advertising pages (especially the dot imaging of mouse patterns) is smooth and delicate, the colors are layered and not dull, the definition is high, there are no spots and color lines, and the printed fonts are clear and unambiguous. No matter how good the fake is, without advanced production technology and strict quality control, its products can only be rough, low in function, short in life and even carrying viruses. In addition to the help of the above aspects, the most intuitive way to identify counterfeit goods is to look at the appearance (including plastic, trademark printing and outer packaging), and the outer packaging is the most intuitive. Because of fake color boxes, brochures, color pages, etc. They are all taken from pirated photos, and the printed effect is far from the real one, and there will be spots, color lines, color distortion, blurred fonts and other phenomena, just like the color of a color TV is not well adjusted, neither thick nor light; Piracy can't keep up with the speed of the revision of the original version, and internal and external configurations are often inconsistent. In short, as long as we are vigilant, take a closer look and be careful of fakes, even the best fakes have nowhere to follow. 6. According to the market survey, Zhongyu Company now declares that all products still using "laser A4 trademark anti-counterfeiting" should be suspected as fakes. Please pay attention.