国产偷v国产偷v亚洲张丽_五月亚洲丁香_a免费在线观看_欧美日本成人_丝袜中出制服人妻美腿_婷婷好紧好多水国产好硬_九九热精品在线播放_97超级在线人妻资讯_日韩精品视频观看_中文字幕无码笫一页

1、 Scope of products applicable for corrosion protection level testing certification:

The anti-corrosion level test certification is applicable to anti-corrosion electrical and electronic products used indoors and outdoors, including household and similar appliances, road electrical equipment, elevator electrical components, electromechanical equipment, lighting appliances, electronic information and multimedia equipment, and other products.

2、 Based on standards:

3、 Classification of corrosion protection level: outdoor level 3, indoor level 2

Service hotline: 18924609560 (same WeChat account)