Qinghui primarily specializes in modified materials (modified PVC, TPE, TPR, and TPV granules), supplying these materials to manufacturing enterprises for extrusion, injection molding, and other processing applications. The triangular windows, water‑deflecting strips, trim strips, and other components displayed in the “Application Products” section of our website are verification samples fabricated using our own materials, intended to validate the compatibility between the materials and operating conditions; they are not products for external sale.

We have developed a comprehensive range of non-metallic materials for automotive applications: modified PVC (soft, general-purpose extrusion grade/injection molding grade, high-temperature resistance, low-temperature resistance, low-VOC, extruded glossy finish, extruded matte finish, rigid alloy), TPE/TPR, and TPV (wear-resistant, high-temperature resistant, high-flow injection molding). Applications cover multiple vehicle components, including interior and exterior trim strips, triangular window seals, sunroof seals, roof trim, front and rear windshields, interior and exterior weatherstrips, inlays, brightwork trims, bumpers, pressure strips, and various edge protection strips.

Application-specific matching: For sealing and trim components that are exposed outdoors for extended periods and require high weather resistance (such as water-shedding seals, triangular-window seals, and sunroof seals), TPV/TPE is typically preferred; for interior parts with low-odor and low-VOC requirements, low-VOC PVC is the material of choice; and for applications requiring a glossy or matte surface finish, glossy or matte PVC should be selected accordingly. The most reliable approach is to provide the part type + manufacturing process (extrusion/injection molding) + key performance requirements; based on this information, we will select materials for each part and recommend appropriate grades.

The performance of several of the company’s products meets the standards of imported products from abroad (such as the United States and Japan), and the company has also developed specialized series that are resistant to high temperatures, low temperatures, and wear. Specifically, for a given grade, properties such as Shore A hardness, temperature range, compression set, and UV/aging resistance rating may vary depending on the grade; please contact us to obtain the corresponding test data. Please provide us with details about your operating conditions (such as applicable temperature, whether the material will be exposed to prolonged sunlight, the media it will come into contact with, etc.), and our engineers will select the most suitable grade for you.

We have developed a series of low-VOC PVC materials to meet the automotive interior industry’s requirements for odor and VOC emissions; in terms of basic environmental compliance, these materials satisfy standards such as RoHS and REACH.