聚氯乙烯塑料门窗近年来在我国发展很快,很多省市先后引进了具有国际水平的塑料门窗生产线,生产出各种质优价廉的塑料门窗供应市场。但是与塑料门窗配套的五金金属件发展不快,式样多年不变,在结构、用材上也存在不少问题,质量低劣,用户极为不满。因此如何使塑料门窗用五金金属件标准化、系列化已成为当前急需解决的问题。 PVC plastic doors and windows in recent years, China’s rapid development, many provinces and cities have introduced a world-class plastic doors and windows production lines, producing a variety of high quality and low price plastic doors and windows supply market. However, hardware and metal parts matching with plastic doors and windows have not developed rapidly. The style has remained unchanged for many years. There are also many problems in the structure and materials, and the quality is poor. Users are extremely dissatisfied. Therefore, how to standardize and serialize metal parts for plastic doors and windows has become an urgent problem to be solved.