Advertising sign manufacturers introduce nameplate label inspection method

Advertising sign manufacturers remind certification product can not be arbitrarily change the ETL certification marks are printed on the product nameplate nameplate parameters, ETL certificate according to power of 30 w, whereas identification plate of power of 20 w. Through the understanding, the enterprise in check - from ETL testing institutions - - - - - - > advertising sign manufacturers remind certification product can not be arbitrarily change the ETL certification marks are printed on the product nameplate nameplate parameters, ETL certificate according to power of 30 w, whereas identification plate of power of 20 w. The understanding that the enterprise from the ETL testing institutions inspection report and certificate did not carefully check, after the report and shown on the nameplate parameters such as voltage, power neither know nor valued. Such enterprise for certification knowledge don't understand there are many, including no certificates are printed on the marks, and certification marks to abuse, misuse, and so on and so forth. Inspection and quarantine departments to remind the relevant export enterprises, certification is a third party based on conformity assessment procedure of product, process or service conforms to specified requirements for written guarantee. It can guide the consumer satisfaction of choose and buy goods, brings prestige to the producers, improve the competitiveness of products in the international market. But in the process of the use of certification marks, should pay attention to the product of the parameters such as voltage, frequency, power to consistent with the certification certificate, shall not be arbitrarily changed. Advertising sign manufacturers the oxidation of aluminum plate making technology categories: 1. Ac oxidation coloring, soft oxide film is suitable for stamping the convex word processing; 2. Sulfuric acid oxidation at room temperature for dyed black; 3. Sulfuric acid at low temperature oxidation, the oxidation film is meticulous and hard, suitable for dyeing native element, golden dye, etc. ; 4. Sulfuric acid, oxalic acid mixed acid oxidation can be obtained under the condition of the hard oxide film; 5. Ceramic oxide with chromic acid and boric acid anodic oxidation, surface with enamel.

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