The casement + fixed window combination offers the ideal balance between ventilation, natural light, and energy efficiency. The operable casement sash opens outward on precision hinges, providing excellent airflow and easy cleaning from inside the room. Meanwhile, the fixed panel maximizes unobstructed views while maintaining exceptional thermal insulation. Both sections are built with high-quality aluminum or , depending on project requirements, and paired with low-E double glazing to reduce heat loss and improve comfort. Multi-point locking ensures a tight seal against air and water infiltration, making this window highly suitable for energy-efficient buildings. series: 100 series thermal break glazing: 5mm+9A+5mm clear tempered U factor: lower than 0.3 SHGC: lower than 0.23

The aluminum folding window is designed for homeowners and builders who require maximum ventilation and an unobstructed view. Each sash folds neatly to the side, allowing the entire window opening to be fully utilized—ideal for kitchens, bars, balconies, and commercial counters. Manufactured with durable aluminum profiles and fitted with stainless-steel folding hardware, the system offers smooth movement, long service life, and resistance to corrosion in coastal environments. Double glazing helps reduce heat transfer and noise, improving indoor comfort. series: 72 series thermal break opening style: folding Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

The aluminum folding door offers maximum flexibility for creating open, unobstructed spaces with a simple folding motion. Engineered with high-strength thermal-break aluminum profiles and heavy-duty stainless-steel hinges, the system can support multiple large panels that fold smoothly to the side, allowing nearly 100% opening of the entire doorway. This makes it an excellent choice for villas, restaurants, showrooms, and any area where indoor and outdoor living need to merge seamlessly.  series: 72 series thermal break opening style: folding Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

The aluminum sliding door is designed to bring expansive views, abundant natural light, and effortless daily operation to any residential or commercial project. Built with high-strength aluminum profiles and equipped with precision rollers, this door delivers smooth, quiet, and stable sliding performance even after long-term use. Double-glazed insulating glass and optional thermal-break profiles significantly improve energy efficiency, making indoor spaces more comfortable throughout the year. Its slim frame design complements contemporary architecture, while the wide opening panel provides seamless indoor–outdoor flow, ideal for balconies, patios, and large openings.  series: 80 series thermal break opening style: sliding Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

The PVC Accordion Folding Door from Xiamen KDSBuilding is a stylish and practical solution for optimizing space while maintaining a modern interior aesthetic. Designed with multiple folding panels connected by durable hinges, this door smoothly folds to the side, creating a wide, flexible opening ideal for homes, offices, and commercial spaces. Constructed from high-quality PVC material, it offers excellent resistance to moisture, corrosion, and wear, making it perfect for kitchens, bathrooms, and areas with high humidity. The lightweight structure ensures effortless operation, while the compact folding design maximizes usable space—an ideal alternative to traditional swing doors. Available in a variety of colors, textures, and finishes, including elegant woodgrain and minimalist white, the PVC Accordion Folding Door complements both modern and classic interiors. Its easy installation and low maintenance requirements make it a convenient choice for renovation or new construction projects. Certified for durability and safety, 

The PVC Sliding Window from Xiamen KDSBuilding is designed to combine elegant style with outstanding functionality, making it a perfect solution for modern homes, offices, and commercial spaces. Built from premium-grade PVC profiles, this window offers superior durability, corrosion resistance, and excellent insulation performance. The horizontally sliding sashes operate smoothly on precision-engineered rollers, providing effortless movement and space-saving convenience—ideal for areas where swing windows are impractical. Featuring double-glazed glass and multi-chamber PVC frame construction, it delivers exceptional thermal insulation and soundproofing, helping to reduce energy costs and create a quieter indoor environment.  series: 60 series PVC opening style: sliding Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

The PVC Sliding Door from Xiamen KDSBuilding offers the perfect combination of modern aesthetics, durability, and practicality. Designed for smooth and effortless operation, this door glides horizontally on high-quality rollers, saving valuable space while providing wide openings that connect indoor and outdoor areas seamlessly. Crafted from premium-grade PVC profiles, it delivers exceptional strength, corrosion resistance, and low maintenance, ensuring long-term beauty and performance. The door is equipped with double-glazed glass for superior insulation, effectively reducing heat transfer and outside noise while enhancing energy efficiency.  series: 140 series PVC opening style: sliding Glass: 5mm+9A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23

The PVC Single Hung Window from Xiamen KDSBuilding combines traditional design with modern innovation to create a window that is both functional and visually appealing. Featuring a vertically sliding lower sash and a fixed upper sash, this design offers smooth operation, efficient ventilation, and enhanced energy performance. Constructed from high-quality PVC profiles, the window provides excellent resistance to corrosion, moisture, and UV radiation, making it durable and low-maintenance in any climate. The double-glazed glass and multi-chamber frame design deliver superior insulation, helping to reduce heat transfer and noise infiltration. Equipped with secure locking mechanisms and airtight sealing, it effectively prevents water and air leakage, ensuring lasting performance and safety. series: 82 series PVC opening style: Single Hung Glass: 3mm+12A+3mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.21

The PVC Hand Crank Casement Window from Xiamen KDSBuilding delivers exceptional performance, style, and user convenience for today’s architectural needs. Designed to open outward with a smooth and durable hand crank system, this window allows precise control of ventilation and easy operation, even in large or hard-to-reach spaces. Made from high-quality PVC profiles, it offers superior resistance to corrosion, moisture, and UV exposure, ensuring long-lasting durability with minimal maintenance. series: 72 series PVC opening style: Hand crank casement Glass: 3mm low-e +12A+3mm+12A+5mm clear tempered glass Certification: NFRC, AAMA, CE, TITLE 24, AS2047 U-Factor  ≤ 0.3 SHGC ≤ 0.23