美国采购需求：液压电磁阀、液压比例阀、液压溢流阀、液压单向阀、液压方向阀、平衡阀

I'm looking for more detailed information about your control valves. Specifically, I need to know the technical specifications, available materials, and any certifications you have. Additionally, could you share details about pricing and lead times for both bulk orders and samples? It would be helpful to understand the range of sizes and configurations you offer, as well as any customization options that might be available. Lastly, if you have a catalog or product brochure, please send that along. Thanks!