Kampuchea Attracts Foreign Investment And Wants To Surpass China.

When the wind does not come, haze often comes back in many parts of central and eastern China, and all kinds of masks on the streets and lanes are also on the scene.

However, how the effect of "anti haze" has been a topic of public concern is the variety of civilian masks.

To this end, the relevant national civil masks standards related draft will be submitted to the National Standardization Committee, and will be released to the public at the end of the year.

In many national standards, will this seemingly unremarkable standard trigger "?"

Market shock?

market size

20 times a year, 4 percent will not meet the standards.

In recent years, haze weather has repeatedly struck, and the market share of "anti haze masks" is also expanding rapidly.

According to incomplete statistics, the market size of China's anti haze mask was around 100 million yuan in 2012, and it has surged to 2 billion yuan last year.

Shanghai Xingnuo Kang Lun Polytron Technologies Inc is the only enterprise in the national standard drafting unit for civil masks.

Zhao Danqing, chairman of the company, predicts that the sales of anti haze masks will be even bigger this year.

In March of this year, the China Consumers Association and the five provinces and municipalities Association released the comparative test results of mask products. In the 37 masks samples, only 40% of the respirators had better filtering effect.

There are only 9 samples of good wear and comfortable samples.

The state labor protection products quality supervision and inspection center, the principal inspector of the mask products, said that the products in the market are mixed up because there is no standard of the civil respirator.

It is understood that the current standards for respirators are only "technical requirements for medical respirators" and "respirator protective devices - self priming filter respirator".

The former is the standard of medical masks, while the latter is the mandatory standard. The classification is "labor protective equipment", that is, the standard of industrial masks.

Type N95, including imported brand 3M, is based on industrial standards.

Zhao Danqing revealed that considering the wearing of the environment, the regulations on haze prevention in civilian masks were lower than those in industrial standards.

"But not too much."

He predicted that three or four of the products will be phased out.

experimental result

Doubts about gas permeability of industrial masks

"In addition to filtering performance,

It will be another indicator in the draft. "

Zhao Danqing said.

Exhaled breath resistance, the popular saying is breathability.

The laboratory supervised by the national quality supervision and Inspection Center for labour protection supplies has conducted many experiments.

In one experiment, two TSI particle testing apparatus and blood oxygen instrument were prepared to detect the filtration and permeability of respirators respectively.

The experimenters created a haze by smoking inside the room. The PM2.5 value was 582. After wearing the 3M 8210 (N95 standard) respirator, the air in the mask was 7, and the filtration performance accorded with the industrial standard.

Then, the experimenter walked on a treadmill set at 6.5 kilometers per hour, and after 3 minutes' quick walk, the oxygen saturation was measured by oximeter. The oxygen saturation was 88%.

Blood oxygen saturation refers to the saturation of oxygen in the blood, and the normal oxygen saturation of the human body is about 90%.

Bai Chunxue, director of the respiratory medicine department of Shanghai Zhongshan Hospital, said that under normal circumstances, healthy adults will not drop in blood oxygen saturation after fast walking or jogging. 88%, in the short term, "the problem is not big", but if less than 80%, there may be clinical symptoms such as rapid heartbeat and respiratory failure.

Many experiments have shown that although the industrial standard respirator has good filtration performance, there are different degrees of air permeability, which is also the starting point for increasing the standard of civilian masks.

Expert advice

Preventing industrial masks from being abused

3M technical experts say professional masks are designed and used for healthy adults, not designed for young children and the elderly.

For those with cardiopulmonary diseases, it is not recommended to wear professional masks.

If these special populations need to wear, consult a professional doctor for advice.

Insiders pointed out that in the aspect of industrial masks, Chinese people are also prone to make similar mistakes in wearing masks, so we should try to prevent industrial masks from controlling the civilian market.

In market circulation, industrial masks are not sold in many countries, but are strictly managed and circulated in a similar way.

Gong Guo Zhuo said, "I hope we have similar regulations to integrate with the international community."