Gwint Window & Door Technology (Shandong) Co.,Ltd. is a manufacturer of customized windows, doors, sunrooms and curtain walls in China established in 2014 as a subsidiary of Shandong Huajian Aluminum Group Co.Our company is equipped with Germany Elumatec CNC machines and other advanced automatic equipment that provides us with the ability to consistently provide quality-assured products certified with ISO 9001 quality control system and PHI certificate and CSA Certification and NAFS Certification. Our products are exported to and well-loved in the USA, Canada, UK, France, Japan, Russia, South Korea, Brazil, Singapore, Malaysia, Australia, and more. With a large factory area of 300,000 square meters, over 8,000 square meters of workshop space as well as 400 highly-skilled employees and 30 R&D engineers, the company's annual production capacity is at 1 million square meters.