Firstly, when selecting bridge aluminum, the thickness of the profile wall should be taken into consideration. This is a key point that many businesses won't proactively tell you. According to the current national standards, the wall thickness of bridge cut aluminum doors and windows used in construction must reach 1.8mm to be considered qualified. Especially in coastal cities like Shanghai, where there are frequent typhoons and strong winds, high-rise residential buildings must use thicker profiles. Many low-priced merchants use 1.4mm or even thinner materials to impersonate national standards, which look similar, but their strength, wind resistance, and durability are completely different levels. After living for three to five years, problems such as deformation, poor sealing, and air leakage may occur. The entire series of Lan-system doors and windows adopts 1.8mm-2.0mm national standard thickened broken bridge aluminum profiles, which are structurally stable and durable for decades, suitable for high-rise, small high-rise, villa and villa projects.

The second point is that the sealing structure determines sound insulation and waterproofing. Shanghai has a long rainy season, high humidity, complex outdoor noise, inadequate sealing, and even the most expensive windows are useless. Ordinary doors and windows only have one or two layers of sealing, while truly high-quality system bridge cut aluminum windows will use three seals+equal pressure rubber strips+cavity partition structure, which can greatly improve water tightness, air tightness, and sound insulation. The sealing level directly determines the living comfort of houses facing the street, by elevated roads, and near the subway. Lan-system doors and windows use automotive grade foam sealing strips that are resistant to aging, do not harden, and do not turn yellow. Combined with professional gluing processes, they eliminate water leakage, air leakage, and water seepage problems from the root.

Thirdly, glass is the soul of doors and windows. Many homeowners think that glass is the same, but in fact, the differences are huge. At least double-layer insulated tempered glass with a thickness of 5+20A+5 or more is standard for household use, providing safety, sound insulation, and impact resistance. If it is a noise sensitive area, it is necessary to upgrade the three-layer hollow laminated glass, which can improve the sound insulation effect by more than 60%. At the same time, it is recommended to use Low E insulation coating to block ultraviolet rays and reduce indoor temperature in summer, and reduce heat loss in winter, truly achieving energy conservation and electricity saving. All Lan-system doors and windows are made of brand original tempered glass, with 3C certification, explosion-proof, earthquake resistant, safe and reliable.

The fourth point is that hardware determines the lifespan of doors and windows. Whether a door or window works well, whether the switch is smooth, whether the anti-theft performance is strong, 80% depends on the hardware. Low price merchants often use unknown miscellaneous hardware, which may loosen, make abnormal noises, sag, and even pose a risk of not being able to close or lock after one year of use. The complete set of Lan-system doors and windows is equipped with international/domestic first-line brand hardware, which has high load-bearing capacity, long service life, anti fall, anti-theft, and anti pinch functions. It can be opened more than 100000 times and is stable for life without failure.

The fifth and most easily overlooked point is that installation is more important than the product. The saying 'three parts product, seven parts installation' is absolutely true in the door and window industry. Many old houses, furnished houses, and high-rise apartments in Shanghai have complex structures, with professional requirements for external wall insulation, waterproofing, window sill slope, and window frame fixation. Without a local experienced installation team, it is easy to encounter problems such as water leakage, cracks, shaking, and unsightly appearance. Lan-system Doors and Windows has a local exclusive installation team in Shanghai, all of whom have undergone professional training and are familiar with various community structures, property regulations, and installation standards. From dismantling old buildings, waterproofing, fixing, gluing, debugging to cleaning, everything is done in one step, making homeowners truly worry free.

In decoration, doors and windows are the items that most affect the living experience and are also the easiest to step on. Especially the broken bridge aluminum doors and windows, which are almost standard for every household, but there are not many homeowners who truly understand the industry. Many people, when it comes to decorating doors and windows, are faced with a variety of brands, thicknesses, glass, seals, and hardware, and have no idea where to start. In the end, they either end up being driven by sales to buy too expensive, or they buy the wrong thing for the sake of cheapness. After moving in, they realize that there is air leakage, water leakage, lack of sound insulation, and lack of thermal insulation, and regret it is too late. Today, Lan-system Doors and Windows will use years of service experience to explain the core logic of choosing broken bridge aluminum, allowing you to choose the right one time, avoid pitfalls, and avoid wasting money.

Firstly, when selecting bridge aluminum, the thickness of the profile wall should be taken into consideration. This is a key point that many businesses won't proactively tell you. According to the current national standards, the wall thickness of bridge cut aluminum doors and windows used in construction must reach 1.8mm to be considered qualified. Especially in coastal cities like Shanghai, where there are frequent typhoons and strong winds, high-rise residential buildings must use thicker profiles. Many low-priced merchants use 1.4mm or even thinner materials to impersonate national standards, which look similar, but their strength, wind resistance, and durability are completely different levels. After living for three to five years, problems such as deformation, poor sealing, and air leakage may occur. The entire series of Lan-system doors and windows adopts 1.8mm-2.0mm national standard thickened broken bridge aluminum profiles, which are structurally stable and durable for decades, suitable for high-rise, small high-rise, villa and villa projects.

The second point is that the sealing structure determines sound insulation and waterproofing. Shanghai has a long rainy season, high humidity, complex outdoor noise, inadequate sealing, and even the most expensive windows are useless. Ordinary doors and windows only have one or two layers of sealing, while truly high-quality system bridge cut aluminum windows will use three seals+equal pressure rubber strips+cavity partition structure, which can greatly improve water tightness, air tightness, and sound insulation. The sealing level directly determines the living comfort of houses facing the street, by elevated roads, and near the subway. Lan-system doors and windows use automotive grade foam sealing strips that are resistant to aging, do not harden, and do not turn yellow. Combined with professional gluing processes, they eliminate water leakage, air leakage, and water seepage problems from the root.

Thirdly, glass is the soul of doors and windows. Many homeowners think that glass is the same, but in fact, the differences are huge. At least double-layer insulated tempered glass with a thickness of 5+20A+5 or more is standard for household use, providing safety, sound insulation, and impact resistance. If it is a noise sensitive area, it is necessary to upgrade the three-layer hollow laminated glass, which can improve the sound insulation effect by more than 60%. At the same time, it is recommended to use Low E insulation coating to block ultraviolet rays and reduce indoor temperature in summer, and reduce heat loss in winter, truly achieving energy conservation and electricity saving. All Lan-system doors and windows are made of brand original tempered glass, with 3C certification, explosion-proof, earthquake resistant, safe and reliable.

The fourth point is that hardware determines the lifespan of doors and windows. Whether a door or window works well, whether the switch is smooth, whether the anti-theft performance is strong, 80% depends on the hardware. Low price merchants often use unknown miscellaneous hardware, which may loosen, make abnormal noises, sag, and even pose a risk of not being able to close or lock after one year of use. The complete set of Lan-system doors and windows is equipped with international/domestic first-line brand hardware, which has high load-bearing capacity, long service life, anti fall, anti-theft, and anti pinch functions. It can be opened more than 100000 times and is stable for life without failure.

The fifth and most easily overlooked point is that installation is more important than the product. The saying 'three parts product, seven parts installation' is absolutely true in the door and window industry. Many old houses, furnished houses, and high-rise apartments in Shanghai have complex structures, with professional requirements for external wall insulation, waterproofing, window sill slope, and window frame fixation. Without a local experienced installation team, it is easy to encounter problems such as water leakage, cracks, shaking, and unsightly appearance. Lan-system Doors and Windows has a local exclusive installation team in Shanghai, all of whom have undergone professional training and are familiar with various community structures, property regulations, and installation standards. From dismantling old buildings, waterproofing, fixing, gluing, debugging to cleaning, everything is done in one step, making homeowners truly worry free.

In summary, when choosing bridge aluminum doors and windows, remember five key points: sufficient wall thickness, sufficient sealing, good glass, stable hardware, and professional installation. As a door and window brand that has been deeply cultivated for many years, Lan-system Doors and Windows always adheres to quality priority, transparent pricing, no tricks, and no additional items. From measurement, design, production to installation, and after-sales one-stop service, Lan-system Doors and Windows has provided high-quality door and window solutions for thousands of households. Whether it's new house decoration, old house window replacement, balcony sealing, or sunroom, we can provide you with the most professional, practical, and cost-effective solutions. Decorate without pitfalls, choose Lan-system for peace of mind.