长井洁 Kiyoshi Nagai

井壁清洁器 wall cleaner

井眼清洁不充分 inadequate hole cleaning

井口或国产洁牙机 Scaler

井下不清洁 Downhole unclean circumstance

渠道及沙井清洁服务 Piping and Manhole Cleaning Service

龙井藕荷洁面手工皂 longjing lotus lotus cleansing handmade soap