日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

US EUROPE AFRICA ASIA 中文
Business / Industries

Standards to help clean up chaotic market for air purifiers

By Wang Yanfei (China Daily) Updated: 2015-12-30 08:36

Standards to help clean up chaotic market for air purifiers

Customers in Beijing examine air purifiers earlier this month, as concerns rose over the hazards posed by poor air quality during the winter. Cao Boyuan / For China Daily

A new national standard for air purifiers will help guide the booming market for the devices, which currently lacks supervision, experts said.

Sales of air purifiers increased when Beijing issued smog alerts recently.

"Some best-sellers have already run out of stock. Even though sales decreased a little compared to the beginning of this month, when the first alert was issued, I think it might be because people already have one," said Luo Zhongchao, a sales assistant at electronic appliance vendor Gome.

Growing concerns for the hazards brought by poor air quality have led to a boom in the market for air purifiers.

Last year, sales of air purifiers increased by about 90 percent, with around 200 manufacturers in the market, according to ibaogao.com, a market research report website.

Some large manufacturers, such as Honeywell, that are usually involved in business-to-business operations, will increase investment in the research and development of air purification devices next year.

"But, still, many entered the market lacking the core technology for cleaning air, even though it is neither costly to produce nor a patented technology," said Xu Yanguang, an analyst with the Beijing-based home appliance consultancy All View Consulting. "They simply rushed into the market to have a place."

The chaotic market has seen exaggerated and misleading advertising with little regulation.

"It is quite common to see products labeled with a high cleaning rate for a certain pollutant - say, PM2.5 or formaldehyde - up to 99.9 percent. Cleaning performance results vary in different sizes of test chambers and over time, but customers simply don't know that," said professor Wu Jixiang, a clean air expert with Shanghai Jiao Tong University's Electricity Engineering Department.

The new national standard represents a push to weed out unqualified manufacturers, Wu said.

Starting March 1, the performance of air purifiers needs to be labeled by uniform standards - clean air delivery rate and cumulate clean mass - which specify cleaning capacity and when a filter needs to be replaced.

"These two measures are of the greatest importance to customers," Zhu Tianle, vice-dean of the School of Chemistry and Environment of Beihang Univeristy, said at a forum sponsored by the Clean Air Alliance of China earlier this month.

"From whatever perspective, it is really a good chance to shape the market," said Zhu, adding that supervisory roles need to be further clarified.

"It seems that the environmental bureau should play a major role in regulating the market, but in actuality nonprofit organizations are doing more. There should be someone who will make sure that regulations are in place."

Hot Topics

Editor's Picks
...
主站蜘蛛池模板: 欧美黄色影院 | av一区二区在线播放 | 男女嘿咻动态图 | 99精品视频在线观看免费 | 一道本在线播放 | 亚洲视频一区二区在线观看 | 青草91 | 亚洲一区在线免费观看 | 国产视频在线免费观看 | 97香蕉视频 | 亚洲精品久久久久久 | 五月亚洲婷婷 | 欧美日韩黄色 | 婷婷色九月| 久久精品视频观看 | 直接看毛片| 一本久道久久 | 日韩av一 | 久久国产露脸精品国产 | 欧美精品大片 | 久操久操久操 | 日日网站 | 中文字幕精品一区二 | 精品国产一区二区三区久久久蜜臀 | 国产经典av | 日韩淫片 | 亚洲专区在线播放 | 91偷拍精品一区二区三区 | 免费观看视频在线观看 | 午夜免费观看 | 国产91在线高潮白浆在线观看 | 国产视频你懂的 | 成人看片在线观看 | 欧日韩一区二区三区 | 黄页在线免费观看 | 日韩中文字幕在线观看 | 免费观看黄色小视频 | 国产成人在线一区 | 亚洲做受高潮无遮挡 | а中文在线天堂 | 国产成人在线精品 |