Kingbo is a direct manufacturer in China supporting bulk procurement and customization, supplying premium Functional Hardware. All door and window hardware products undergo strict quality inspections, featuring stable performance and strong compatibility. They are widely used in residential, commercial and industrial door & window projects, making them a reliable choice for hardware manufacturers and engineering buyers.
Doors and windows are important building enclosures, and hardware accessories are the core components to ensure their stable operation. Functional Hardware, as a key category of door and window accessories, directly determines the using experience, safety level and service life of doors and windows, which is an indispensable configuration for modern buildings.
· Load-bearing support: The main force-bearing parts are made of thickened alloy materials, which can bear the weight of large-sized glass sashes and avoid sagging or deformation after long-term use.
· Opening & closing control: Transmission components and handles adopt ergonomic design, ensuring smooth and labor-free operation even under frequent daily use.
· Sealing performance: Multi-layer composite sealing structure effectively blocks rainwater and dust, reduces outdoor noise, and improves indoor comfort and energy efficiency.
· Safety protection: Anti-pick locking structure greatly enhances anti-theft performance, building a solid safety line for residences, office buildings and public venues.
· Noise reduction & buffering: Built-in buffer parts weaken impact and noise during closing, reduce component wear and extend the overall service life.
From residential buildings to large commercial complexes, the overall quality of Functional Hardware greatly affects the actual effect and long-term experience of doors and windows.
Hardware selection should take door & window types, service environments and engineering standards into comprehensive consideration, instead of only focusing on price and appearance. Based on rich engineering supporting experience and the characteristics of Functional Hardware, we have sorted out standardized selection guidelines to help buyers match products accurately and avoid quality risks.
· Select by opening style: For casement doors and windows, choose adjustable connecting parts and integrated locks for tight closing and even stress. For sliding doors and windows, focus on the load capacity of tracks and pulleys, and select reinforced structures for large sashes. For folding doors and windows, adopt linked transmission parts and thickened tracks to ensure synchronous and stable operation.
· Select by service environment: Use electroplated or PVD anti-corrosion products for coastal areas with high salt fog to prevent oxidation and rust. For high-rise buildings under strong wind pressure, reinforce locks and connecting parts to prevent sash shaking and falling. Equip mute buffer accessories for hotels and offices to lower operating noise.
· Select by quality standard: Prioritize products passing tens of thousands of opening-closing fatigue tests for long-term frequent use. Choose direct manufacturers for large orders to guarantee on-time delivery and professional after-sales support.
The 4-in-1 Window Locking Point and Locking Base is a special core accessory for casement and sliding windows. It effectively improves locking precision, sealing performance and safety, and is one of Kingbo’s optimized hardware products.
· Patented adjustable structure: Self-developed adjusting technology compensates installation deviation, realizing tight locking without gap or looseness.
· High safety performance: Thickened alloy casting provides strong anti-pick and anti-impact ability to enhance overall security.
· Excellent weather resistance: Multiple anti-corrosion treatments prevent rust and fading under long-term sunshine, rain and salt fog erosion.
· Universal size & easy installation: Standard size fits most mainstream door and window profiles, simplifying installation and cutting labor cost.
This accessory is widely used in coastal residences, high-rise apartments, office buildings, schools and hospitals for home renovation and engineering supporting projects.



To facilitate quick selection for engineering purchasers and door & window factories, the table below shows tested parameters and industry standards of Kingbo products. All data is formulated based on our self-developed Functional Hardware, complying with domestic and international building codes.
|
Performance Item |
General Industry Standard |
Kingbo Standard |
Application Advantages |
|
Single sash load capacity |
60-80kg |
≥100kg heavy load |
Suitable for large heavy-duty doors and windows, prevent sash deformation |
|
Opening-closing lifespan |
30,000-50,000 times |
80,000-100,000 times trouble-free |
Ideal for public buildings with frequent use, lower replacement cost |
|
Corrosion resistance |
24h salt spray test without rust |
Pass 72h enhanced salt spray test |
Adapt to humid and high salt fog coastal areas |
|
Sound & dust insulation |
Single rubber strip sealing |
Combined wool strip + multi-layer rubber strip |
Excellent waterproof, dustproof and noise reduction effect |
|
Installation compatibility |
Fixed size, low error tolerance |
3D adjustable, adapt to installation deviation |
Lower construction difficulty, compatible with most profiles |
|
Anti-theft performance |
Single-point lock for basic protection |
Multi-point lock + anti-pick structure |
Upgrade security level for high-rise and street-side buildings |
Product quality mainly depends on raw materials and production technology. Kingbo has a complete quality control system. Our Functional Hardware is strictly controlled from raw materials to finished products, with better stability and durability than ordinary hardware on the market.
· Premium raw materials: Main parts adopt high-strength aluminum alloy, featuring high hardness, impact resistance and good corrosion resistance. Moving parts combine stainless steel and wear-resistant engineering plastic for smooth operation. Elastic sealing strips resist high & low temperature and aging, avoiding cracking after long use.
· Precision manufacturing: Fully automatic stamping ensures tiny dimensional error and tight fitting. Key stressed parts are integrally forged without splicing gaps, greatly improving overall strength and deformation resistance.
· Diversified surface treatment: Powder coating, electroplating and PVD coating are available. The coatings are scratch-resistant and durable, matching modern, light luxury and industrial decoration styles.
High-grade door and window hardware is a valuable long-term investment for construction projects. Premium Functional Hardware brings multiple benefits in safety, operation, user experience and asset value.
· Reduce long-term maintenance cost: The service life is 2-3 times longer than ordinary hardware, cutting down expenditure on repair and replacement. Stable structure effectively reduces common faults such as jamming and lock failure.
· Improve building safety: Reinforced locks and connecting parts enhance wind resistance and anti-theft ability, eliminating potential safety hazards for high-rise buildings.
· Optimize user experience: Built-in mute buffer ensures quiet opening and closing, creating a comfortable indoor environment for high-end residences, hotels and offices.
· Increase project value: Exquisite surface finishes upgrade the overall texture of doors and windows. Durable hardware keeps products in good condition and raises building added value.
A: It fits casement, sliding and folding doors & windows for residential, commercial and industrial use. Matched with Functional Hardware, it optimizes opening, sealing and safety performance.
A: Yes. Made of high-quality aluminum alloy with multi anti-corrosion finishes, it is corrosion-resistant and suitable for coastal environments.
A: Yes. As a direct factory, we have sufficient production capacity and stable delivery. We provide professional selection guidance, installation support and complete after-sales service.
A: Yes. Multiple surface treatments including electroplating, powder coating and PVD fit various mainstream decoration styles.
A: No. The 3D adjustable design allows high error tolerance. It is easy to install with standard specifications and installation guides.
As a professional manufacturer of door and window hardware, Kingbo produces the 4-in-1 Window Locking Point and Locking Base, a core accessory for casement windows and sliding windows. Relying on its patented adjustable technology, high-quality materials, and exquisite surface treatment, this 4-in-1 Window Locking Point and Locking Base has become a preferred choice for various building door and window systems. Whether it is residential buildings in coastal areas, commercial office buildings, or high-end residential communities, its excellent corrosion resistance, smooth operation performance, and high safety can meet diverse application needs, providing reliable and long-lasting protection for door and window use.
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