Hot Sale Wannate Hb-75b Aliphatic HDI Biuret Hardener Anti-Yellow Lightfast Curing Agent for Automotive Refinish & Construction Coatings. Customized Packaging: We offer customized packaging, LOGO, and package color to meet your specific requirements. OEM/ODM Support: Factory direct supply with full OEM production capabilities including product customization. High Purity Grade: Product purity reaches 99.8% with strict quality control and ISO certification. Versatile Application: Suitable for polyurea spraying, polyurethane foam, construction, packing, and transportation. Fast Delivery: Express delivery available within 7-15 working days depending on shipping method. Sample Availability: Samples are available for testing before bulk order confirmation. Quality Inspection: Comprehensive quality checks including video inspection and factory standards verification. Global Shipping: Wide range of shipping options including sea, air, and express delivery worldwide.