青青青国产91蜜臀一区二区_国产日韩精品情侣AV_国产在线91国语_日本黄a在线网站大全_A在线视频这里只有精品_亚洲丁香五月亚洲欧美_天堂欧美城网站网址_影视自拍高清无码_粉嫩嫩国模无码大尺度视频_国产亚洲欧美日韩在线爱豆

Quality assurance commitment

Quality assurance commitment

The company is strictly in accordance with the ISO9001-2000 international quality assurance system standards. The company has a professional quality control team and professional testing equipment to ensure product quality. details as follows:

1. The company's products are produced in accordance with the relevant national standards, industry standards or enterprise standards, and meet the safety standards, hygiene standards and environmental protection standards set by the home.

2. In addition to the standards provided above, the products also meet the specific or special requirements provided by the owner (such as customized drawings or requirements provided by the owner).

3. The implementation standards and acceptance criteria of the relevant products are as follows: air outlet standard JBJ77-91 "Air Industry Standard for Air and Air Port" and Q/TIGP1-97 "Air Conditioning Port" Shanghai Enterprise Standard GB50243-2002 "Construction and Acceptance of Ventilation and Air Conditioning Engineering" Specification"; Tukou aluminum profile material conforms to GB5237-2000 "Aluminum Alloy Building Profile". Fire dampers and smoke venting valves implement GB15930-2007 "Fire dampers for building ventilation and smoke exhaust systems" and "Code for construction quality acceptance of ventilation and air conditioning engineering" Gb50243-2002 and fire protection specifications for high-rise civil buildings. The air volume regulating valve implements JB/T7228-94 "Air Volume Control Valve" and GB50243-2002 standard. The company manufactures and accepts air outlets, fire dampers, smoke venting valves, exhaust valves (mouths), air volume control valves and mufflers according to the above standards, and promises that all performance meets the requirements specified in the above standards.

4, the warranty period is 12 months, during the warranty period, the company's product quality due to the quality of the product itself, the performance of the product does not meet the requirements for the replacement, replacement, repair, for the installation process during the construction site In the case of man-made damage or failure to properly install according to the product specifications provided by our company, the performance is degraded or scrapped. In line with the principle of friendly cooperation and satisfaction of the owners, our company is responsible for repair and only charges the cost of related products.

5. In order to ensure the quality of the company's products (especially to reduce mis-ordering or improper use of products), the company is responsible for providing pre-sales technical services, sales technical training services and after-sales maintenance services.

The company's products are responsible for lifetime maintenance!


主站蜘蛛池模板: 亚洲国产成人精品女人久久久久 | 成人免费性爱网站 | 最好看的2019中文大全 | 国产成人AV性色在线播放m蜜柚 | 视频一区二区在线 | 亚洲精品久久一区二区三区蜜桃臀 | 无码人妻一区二区三区三 | 成人黄色视频网站在线观看 | 无码人妻欧美一区二区三区 | 久久久精品国产免费观看同学 | 69人人妻人人澡人人爽国产DVD | 四虎影库hh视频无码外国网址 | 公安热妇搡BBBB搡BBBB | Free性丰满69性欧美天美 | 西西人体大胆4444www无码人妻 | 3级片一区二区三区成人动漫 | 亚洲国产精华液网站w | 免费在线观看一级片 | 新久久久浓毛内射 | 国产av一区二区三区床上啪啊啊啊 | yyyyyy婬欲无码一二区电影 | 精品一区二区三区四区五区 | 欧美一级一级一级一级一级一级一级A | aV资源站在线观看 | 国产又粗又猛又爽又黄的刘涛 | 午夜精品一区二区三区在线视频 | 黄色一级视频网站 | 羞羞白丝狂躁喷水Av大片 | 国产中文字幕剧情 | 国产又粗又猛又爽又黄刺激视频 | 精品亚洲一区二区 | www.17c.com噴水老師 | 欧美老熟妇又粗又大 | 中字无码在线播放 | www.高清无码在线观看 | 熟妇人妻无码中文字幕老熟 | 女人高潮一级A片免费看视频 | 91久久无码一区人妻A片蜜桃 | 一本色道久久综合无码 | 久久网成人视频免费看 | 又大又粗又硬又黄的视频 |