Customized Environmental-Friendly Silicone Rubber Seal Strip for Doors and Windows Curtain Walls. Customizable Colors: Standard colors include black, grey, brown, and white; other colors available upon request. OEM and ODM Services: Professional team capable of producing according to customer samples, drawings, and designs. Energy Saving Design: Efficient heat insulation structure reduces energy consumption and maintains stable temperatures. Collision Protection: Acts as an anti-collision bar to protect door bodies and frames from impact damage. Fast Delivery: Stock items delivered in 5-10 days; mass production takes 15-20 days. Free Sample Availability: 3-5 meters of regular items provided free of charge; customer pays freight only. Durable Construction: Made from high-quality EPDM and silicone rubber with excellent aging and wear resistance.