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Formulate the world's most stringent chemical testing indicators
According to the “Communications Statistics Communiqué of 2017” of the Ministry of Industry and Information Technology, the total number of domestic mobile phone users has reached 1.42 billion, and the penetration rate of mobile phone users has reached 102.5 units/hundred people. Among them, 75% of mobile phone users choose to use mobile phone shell, about 1 billion mobile phone shell users nationwide, nearly 70% of the national mobile phone shell from Shenzhen.
The comparison of plastic mobile phone shells compares 30 mobile phone shells of 28 brands online and offline, including Samsung, Huawei, Apple, Xiaomi, and VIVO. The comparative test is based on the chemical safety concerns of consumers, combining with the actual use scenarios of consumers, referring to international standards and industry requirements, and aiming to formulate the most stringent test indicators for mobile phone casings in the world.
The samples selected for comparative trials are based on daily consumer demand. Samples are purchased from online and offline shopping malls, specialty stores, accessory stores, and online shopping platforms.
5 brands of mobile phone shells were detected toxic and hazardous chemicals
The reporter learned at the test result conference held yesterday that 23 mobile phone cases exceeded the international first-rate standards, and no toxic and hazardous chemicals were detected, accounting for nearly 80%; 11 mobile phone case aging test results did not reach level 4, easy to send yellow Discoloration. It is worth noting that, during the test, five mobile phone shells such as Apple were detected toxic and hazardous chemicals, the content exceeds the limit. In addition, the girl's favorite " rhinestone glitter film " mobile phone shell, lead content exceeded the standard limit of 1550 times.
In this comparative test, the Shenzhen Consumer Council also selected a five-star quality chart, a four-star quality chart, a three-star quality chart, and a list of test results that exceeded the limit based on sample quality.
After trials, 13 mobile phone shells ranked on the five-star quality chart, 201 chemical test items did not detect toxic and hazardous chemicals, aging test for 48 hours, anti-yellow grade reached 4 or more, product durable, not easy to yellow discoloration. Ten mobile phone shells ranked on the four-star quality chart, and 201 chemical tests did not detect toxic and hazardous substances. The aging test results did not reach level 4, but the products were susceptible to yellow discoloration. Two mobile phone shells ranked on the three-star quality chart, and one of the 201 chemical tests detected the use of toxic and hazardous chemicals, but the detected value was within the allowable range of the standard.
Yesterday’s press conference also announced the list of brands whose test results exceeded the limit. It is worth noting that, in the comparative test, Yuening brand mobile phone shell was detected a number of toxic and hazardous substances, the content far exceeds the standard limit, the transparent pink rhinestone lead content on the mobile phone shell exceeds the standard limit of 1550 times.
Transparent material mobile phone shell is relatively safe
It should be noted that the mobile phone shell is not the higher the price the more quality protection. In the five mobile phone cases found in this comparative trial, the Apple brand model was the mobile phone case of MR672FE/A, and Apple's official website sold for 288 yuan, which was the most expensive product among the 30 samples.
The Shenzhen Consumer Council also reminded consumers that transparent cell phone casings may be more susceptible to yellow discoloration, but are relatively safer. The phone case may contain poisonous and harmful substances and must not be bitten by mouth. Consumers should purchase branded mobile phone shells through formal channels. At the same time, wary of glitter diamond phone shell, the more beautiful mobile phone shell may be more " poison ".