Guide Rails for Automotive Sunroofs

Engineered for luxury automotive applications including BMW and Mercedes-Benz models, our glass-fiber reinforced PA66 sunroof rails combine >100MPa tensile strength with precision silent operation. These OEM-certified tracks maintain ±0.05mm tolerance across -40°C to 140°C temperature cycles, outperforming metal rails with 50% weight reduction and eliminating squeaking noises through proprietary low-friction formulations. The moisture-resistant polymer construction prevents corrosion from road salts while withstanding 100,000+ open/close cycles without wear deformation.

The performance of polyamide profiles complies with the Chinese standard GB/T 23615.1-2017 and the European standard EN 14024:2004. For the KAXITE series, the performance exceeds the standard requirements. In 2015, we assumed a leadership role in the Chinese National Standard Committee, overseeing the revision of GB/T 23615.1-2009 to the 2017 version.

KAXITE operates its own laboratory to rigorously test and ensure quality control. With advanced granulation capabilities, KAXITE can accommodate diverse performance requirements and material specifications, enabling the customization of products to meet specific client needs.

Dimension Measurement	CNC Specimen	Density	Glass Fiber Content
Shore Hardness D	Impact Strength	Tensile Strength/Modulus	Elongation at Break
Melting Temp. / DSC	High Temp. Test	Low Temp. Test	Flammability (UL94)

KAXITE operates over 40 extrusion lines dedicated to producing a wide range of plastic profiles. Our production process is supported by a 7*24-hour laboratory testing system to ensure consistent performance monitoring. With ISO9001 certification, we maintain a high standard of production quality.

The greatest challenge lies not in conceptualization but in execution. Many customers have expressed frustration when other manufacturers failed to produce the shapes they designed, prompting some to seek assistance directly from our workshop. We specialize in developing and fabricating custom dies of the PA66 thermal insulating profiles for our customers, and we have never failed to deliver on any shape requested. In most cases, we can complete the development of new products within 15 days.

Regarding product packaging, we offer standard packaging options to ensure the safe storage of PA66 profiles. Additionally, we can provide customized packaging based on specific requirements. For all specifications and shapes of polyamide thermal insulation strips, the standard packaging method is linear, with a standard length of 6 meters; however, customized lengths are available upon request. For shapes such as "I", "C", and other simple geometries, the products can be conveniently packaged in rolls. We strive to meet individual customer needs by providing flexible packaging solutions tailored to different product specifications.

We are highly responsive to customer demands, leveraging our substantial annual production capacity of 20,000 tons to ensure timely delivery. Typically, we can complete product delivery within 15 days. In addition to fast delivery, we offer perfect packaging solutions tailored to customer requirements. Our packaging and transportation solutions are specialized to maximize container load rates, improve delivery efficiency, and reduce transportation time, providing our customers with optimized service for both large and small order volumes.