Never trust the strength of the enterprise introduced by the merchant. Before buying a household formaldehyde detector, you can log in to the enterprise credit inquiry system of the State Administration for Industry and Commerce, through which you can clearly understand the experience, strength and scale of the enterprise. In addition, you can also check the time of trademark registration through China Trademark Network, and check whether the enterprise has related patents such as household formaldehyde detector through China Patent Inquiry System. It is necessary to choose a large-scale enterprise with strong independent research and development strength, so that the quality of household formaldehyde detectors will be stable and there will be reliable after-sales service.
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2. Look at the product qualification
In addition to understanding enterprise qualifications, we should also pay attention to product-related qualifications. As mentioned above, the household formaldehyde detector needs a calibration report issued by the metrology institute where the enterprise is located before it can be put on the market. When choosing to buy a household formaldehyde detector, remember to ask the merchant for it. At the same time, we should also pay attention to check the calibration report, which is only effective if it has a steel seal. You can also call the issuing unit to verify the authenticity according to the report number.
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3. User word of mouth
The opinions of other users are also of reference significance. When choosing to buy a home formaldehyde detector, you can also go online to learn about the user experience, product stability, after-sales processing speed and so on. When shopping online, you can check the user evaluation records, with the focus on the follow-up content, because many online shop sellers will attract consumers through false transaction records and favorable comments.