... by hand lay-up technique 3)complex process Specifications Name: train cleanrobot shellMaterial: FRPTechnique: hand lay-upFeatures: anticorrosion, moistureproof, light ... high-strength, anti-aging, maintenance free, etc.About the productsThis train cleanrobot shell is a real case we are doing for ... by providing you with ideal products of fair price. train cleanrobot shell for shanghai railway station