Selection of steel doors and Windows must be to dealers for product quality inspection certificate.

选择好塑钢门窗后一定要向经销商索要产品质量检验合格证明。

youdao

Because lookalike, 7, called Twentysomething handle, it is a fitting Windows and doors, widely used in aluminum and steel doors and Windows.

因外形相似7字，被称之为七字执手，它是门窗中的一个配件，广泛应用于铝合金和塑钢门窗上。

youdao

In recent years, plastic-steel doors and Windows have been widely used in architectural engineering because of the advantage of sound-proof, heat preservation and antisepsis.

塑钢门窗是一种节能环保的新型建筑门窗，目前已被广泛地应用于各类建筑工程。

youdao

Steel also adds flexibility: The absence of load-bearing walls means windows and doors can be placed just about anywhere.

FORBES: Magazine Article