Qingdao Xinjinda Curtain Wall Window & Door Co.,Ltd was established in 1992, it’s the earliest and most professional enterprises which are engaged in the design,mufacture,installation of energy conservation and environmental protection’s construction window and door, and it is one of the first batch enterprises had the honor of . Presently, our company innovates unceasingly,and adjusts windows and doors' structure to meet national building industrys’ rapid development and high standard requirements. The leading products are: Hiqh quality thermal break aluminum window/door, Hiqh quliaty UPVC window/door,glass window/door, glass/stone curtain wall and so on. Abundant strength, Great variety, Excellent quality. The company has standard production workshop and office facilities,successively introduces international advanced aluminium windows and doors complete set processing equipment,curtain wall processing equipment, laboratory equipment, and w