美国采购需求：齿轮操作机构、变速箱、手动变速箱、手动变速箱、四分之一回转变速箱、阀门变速箱

I hope you're doing well! I'm reaching out to request a comprehensive submittal along with all relevant technical details for the Aluminum Alloy Quarter-Turn Manual Gearbox. This info is crucial for us to assess the product thoroughly. Additionally, if there are any specifications, certifications, or performance data you could share, that'd be great! Looking forward to receiving the details soon, as it will help us expedite our evaluation and decision-making process. Thanks a lot!