The "Yanmen" brand series products produced by Longchuan Door Industry have multiple national patents and have been tested and certified by the Zhejiang Anti theft Door Quality Inspection Center.

1、 Execution standards:

Anti theft security door "Class A": Report No. 09-FD045W; GB17565-2007 General Technical Conditions for Anti theft Security Doors

Anti theft security door "Class B": Report No. 2008-FD067W; GB17565-2007 General Technical Conditions for Anti theft Security Doors

Anti theft security door "Class C": Report No. 09-FD046W GB17565-2007 "General Technical Conditions for Anti theft Security Doors"

Anti theft security door "Class D": Report No. 2008-FD066W GB17565-2007 "General Technical Conditions for Anti theft Security Doors"

Steel entrance door: Q/YLCM 01-2006

Steel interior door: Q/YLCM 02-2008

2、 Product Category:

Production types: "A", "B", "C", "D" anti-theft safety doors, steel entrance doors, steel interior doors, non-standard doors

Series: 5cm, 7cm, 9cm, 11cm

Category: Standard Single Door, Double Door, Door in Door, Composite Door, Mother Child Door

Common specifications: 1970 * 860 mm、1970*900mm、1970*960mm、2050*860mm、2050*900mm、2050*960mm、2050*1200mm、1930*860mm、1930*960mm（ Note: Customizable according to specific dimensions)

Opening direction: left opening, right opening, inner opening, outer opening

3、 Product features:

※ Thickened door leaf structure: Made of high-quality cold-rolled steel plate, it has strong impact resistance, rust prevention and anti-corrosion characteristics. It introduces advanced anti-theft security door technology from abroad and adopts a unique thickened anti-theft door leaf structure.

※ Surface treatment: The door panel is treated with an automatic phosphating production line to remove oil, rust, and phosphating, forming a rust proof layer. After being sprayed by the automatic spraying production line, it enters the drying oven for drying. Then, it is made into wood grain by the automatic wood grain transfer printing production line and enters the paint room for polishing and refinement.

※ Adjustable reinforced hinge: Adopting thickened, widened, and reinforced adjustable hinges, the stability of the door leaf and the flexibility of opening with the door frame are enhanced by rotating bearings, with a unique design and superior performance. Not only does it beautify the overall appearance of the door, but it also solves the problems of restricted hinge opening, difficult maintenance, and easy sagging in the market in the past.

※ Airbag sealing strip: High grade airbag sealing strip is used on the door frame, and the sealing strip is completely attached to the door frame. After closing the door, the sealing strip makes the door leaf adhere to the door frame, so that the lock tongue is not under force. The switch is lightweight, flexible, and has buffering, sound insulation, and thermal insulation effects.

※ Curved border design: The door frame adopts a patented large circular arc edge design, which enhances the strength and anti-theft performance of the door frame.

※ Door panel: Unique facade design, using Italian imported five axis linkage CNC machine tools to process and make molds. The panel is formed in one step by a 2000T large hydraulic press, and each item is patented. The surface of the door panel is finely and smoothly sprayed, with luxurious and generous textures, bringing a comfortable and safe feeling, and rendering the atmosphere of modern life.

Hidden doorbell: With a unique doorbell design that securely combines with the door body, it easily conveys information and has practicality and ornamental value.

※ Locks: From the perspective of safety performance, Longchuan Door Industry uses the well-known Chinese trademark "Juli" brand locks, with a unique patented handle design and comfortable and easy opening. The unique internal insurance strengthens the locking point, making the door more secure, anti-theft, and providing users with more satisfactory, safe, and convenient use. The lock adopts a computer slot ABC lock core, with precise structure and exquisite design. The usage method and sequence are as follows: please use the "A" key (also known as the decoration key) first, then use the "B" key (also known as the owner key), so that the "A" key will immediately become invalid, and finally use the "C" key. From the perspective of safety and speed, Longchuan Door Industry also adopts dual quick locks, with quick locking function. Both inside and outside can be quickly locked with handles, reducing the trouble of using keys to lock or open doors. The "Yanmen God" brand patented super B-class lock core has an anti opening time of over 260 minutes, and even the "master key" cannot be used.

Reasonable transportation scheduling. Vehicle and shipping agency services help customers reduce transportation costs while effectively avoiding collision problems.