Hong Kong Tung Shing Lai Group was established in Hong Kong in 1970. With a rich experience in producing various high-end window and door hardware accessories, it has a history of 42 years. It is a professional window and door hardware accessory company that integrates technology, scientific research and development, production and manufacturing, product quality inspection, and sales. The company possesses strong development capabilities, substantial technical strength, advanced production equipment, and a comprehensive testing system. Its excellent products have won unanimous praise from a wide range of customers, making the company's products lead in selection, appearance, and practical performance among industry levels. It enjoys a broad market and high market reputation both domestically and internationally. The company has passed the ISO9001:2000 international certification system. Yun Group has domestic outstanding and experienced technical personnel and owns several well-equipped production lines, including product development, mold design, oil pressing, cold chamber, hot chamber oil pressing, injection molding, spray painting, and electrostatic powder coating. New products must undergo strict testing by the detection system to confirm that all performance indicators and practical effects meet national standards before they are put into production. The company's patented product "Tung" meets the quality standards of the Hong Kong Housing Authority, homeowners, Singapore, Malaysia, and China. The products are sold throughout the country and exported to Singapore, the United States, Thailand, Australia, Southeast Asia, and other regions, and are deeply trusted and well-received by users.