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What is the harm of not qualified desks and chairs?

by:CSSSLD     2021-01-23
Desks and chairs are with students every day of time. Long learning tool, if the students every day use of desks and chairs is unqualified will bring what harm? Chongda small make up with all of you to talk about today is not qualified desks and chairs will be what's the harm?

harm one: formaldehyde is desks and chairs for the main plank of the desktop, too. It is not easy to meet, unqualified plate formaldehyde release a quantity to exceed bid, harm, the harm of formaldehyde we all know, the skin direct contact with formaldehyde can cause allergic dermatitis, splash, necrosis, inhalation of high concentrations of formaldehyde can be induced bronchial asthma; Toxic substances, formaldehyde is virgin pulp can combined with proteins, when high concentrations of inhaled respiratory serious stimulus and edema, eye irritation, headache; High concentration formaldehyde is a genotoxic substance. Under the condition of high concentration of suction in the laboratory, experimental animals can cause nasopharyngeal cancer, so the formaldehyde releases a quantity unqualified products must not enter the school. Harm

2:
desks and chairs design safety can't be ignored, the design of the desks and chairs must accord with human body engineering, the desktop, the design of the plate and the back of a chair to design radian, joint human body, correct posture, so as to guarantee the students' physical health, deformation. Harm
3: architecture
desks and chairs in the architecture must be stable, so as not to pose a threat to the students' body, each part should think of whether welding or incision should have security measures, cannot appear burr, etc. In order to avoid scratch students, on the desktop can not have edges and corners but arc corner of the table, and ensure the security of the students.
these three points are inferior desks and chairs the harm to the students, resolutely resist bad calls for school desks and chairs into, for each batch of desks and chairs to the acceptance, unqualified, substandard resolutely cannot enter.
that is unqualified desks and chairs can bring harm to students, procurement desks and friends must pay attention to distinguish when buy desks and whether there is more than harm.
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