英语翻译我是XX单位的,现在正在做一个基于TDLAS技术的甲烷气体检测项目,需要一个气体参考单元.请问贵公司是否可以定制

Dear Mr.XX/ Ms.XX,
I am from XX company,and recently,we are working on a methane gas detection project which is based on TDLAS technology.We need a gas reference section,and we want to know that if you can make it,that section should be fulled with methane gas (for example,like 20% methane gas).
Thank you for taking time to read my letter.
From,XX