SPRING DOOR can be used to close swing and double action doors made of various materials in a reliable manner whilst remaining subtle. The product range includes systems for light and heavy leaf weights as well as door closers for use on fire and smoke protection doors.

• Stainless steel cover plate.
• Filled with high quality anti-icing hydraulic oil ensuring and flexible operation of.
• Mechanical parts at different temperatures.
• Door opening angle at 180° at your options.
• 90° Stop device or non-stop device at your option.
• With single closing speed adjusting valves at 90° to match different closing purposes.
• General design is suitable for opening doors with left/right hand and single/double opening.

HANNSTAR INDUSTRY COMPANY LIMITED is a professional company since 2008 in scientific research, development and production of  ALUMINUM DOORS / ALUMINUM WINDOWS / MOSAIC / LIGHTINGS / ROOFING / ALUMINUM BOAT

    With "quality first, service upmost" as purpose, by pursuing Integrity, Pragmatism, Innovation and sticking to the business concept of "surviving by quality, developing by brand", the company has established its product and service quality assurance systems by keeping strictly controlling every section ranging from procurement of raw materials, production(as per international standard), inspection, packaging, to packing and transportation, and adoption of scientific and systematic management methods and effective incentive mechanism allows it to expand its business increasingly
 

     In addition, with multiple verification and certificates from ISO9001: 2000 and other organization, all our main products which are exported to Australia, Brazil, Colombia, Venezuela , Peru, Singapore, Malaysia, Thailand, South Korea and Pakistan have enjoyed applause and acceptance from a huge number of foreign merchants and markets, leading to long-term and friendly cooperation relationship with overseas buyers. And have won both its reputation and customer satisfaction from home and abroad.

    Our company main products are:  Aluminum doors, Aluminum Winodws , Mosaic , Building roofing ,Lightings and Aluminum Boat , and also we can design based on your drawing or samples .

   With the concept of a major baseline business section combined with multiple industries simultaneously developed, the company welcomes all relevant enterprisers and merchants home and abroad to visit us for business development, and we hope to cooperate together with potential partner from all industries head-to-head with a win-win mutual benefit and to build a better future!

    We are confident that you will discover HANNSTAR to be a preferred and valued supplier once you enjoy our products

 Thank you and all the best to you!