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It is understood that due to the release of toxic gas formaldehyde exceeding 1.5mg / L, yesterday, some wooden furniture produced by 19 furniture factories such as Rixinda and Beijing Shuangye were exposed to be unqualified.
According to the regulations of "Limit of harmful substances in wooden furniture for interior decoration and decoration materials": formaldehyde emission in wooden furniture ≤1.5mg / L. In this spot check, 19 furniture manufacturing enterprises including Beijing Zhengxin Weiye Furniture Co., Ltd., Beijing Jingshuangye Furniture Manufacturing Factory, Beijing Chengming Huateng Furniture Co., Ltd., and Beijing Century Hongwei Furniture Factory were named. Of wooden furniture products were exposed to excessive formaldehyde emissions.
The roles of the shoulder are:
(1) Prevent the ballast from scattering under the subgrade to maintain the integrity of the ballast bed;
(2) Prevent subgrade soil from squeezing to both sides under load and strengthen the stability of subgrade
(3) Provide space for setting line signs and signal signs on both sides of the line;
It is used for railway staff to walk, avoid vehicles, and store materials, machines, tools, etc. on the upper part of the line for road maintenance.
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