无码无套少妇毛多18pxxxx,日韩欧美一区二区福利视频,17c视频在线观看,中文字幕久久久久久妻,日本黄色精品专区网站

Company NewsABOUT US

2025-04-03

The three best varieties of exterior wall insulation materials

In the field of architecture, external wall insulation materials play a crucial role in improving the energy efficiency of buildings and maintaining comfortable indoor temperatures. Here are three widely recognized varieties of exterior wall insulation materials....

2025-03-27

B1 level flame retardant standard for rubber insulation board

In the field of building insulation, rubber insulation boards are highly favored for their excellent insulation performance and environmental characteristics. Among them, the B1 level flame retardant standard is an important indicator for measuring the fire resistance performance of rubber insulation boards....

2025-02-20

What is the temperature resistance of rubber insulation cotton

Rubber insulation cotton, as a widely used insulation material in construction, industry, pipelines and other fields, its temperature resistance performance is an important indicator to measure its quality and scope of use. So, how much temperature can rubber insulation cotton withstand?...

2025-02-17

Thickness of Aluminum Coating for Pipeline Insulation: A Key Factor in Ensuring Pipeline Operation

In many industrial and civilian fields, pipeline insulation is crucial, and aluminum sheet, as a commonly used insulation outer material, its thickness directly affects the insulation effect and the service life of the pipeline....

2025-02-14

What is the fire rating of rubber insulation

Rubber insulation material, as a widely used insulation material in the construction and industrial fields, has attracted much attention for its fire resistance performance. According to the national standard GB8624-2012, the fire rating of rubber insulation materials is mainly divided into Class A, B1, B2, and B3...