Ningbo Boyu waterproof material Co.,Ltd.A professional manufacturer which is research and development, productionand sales in one enterprises. located Chongshou industrial area of Cixi Ningbo, with convenient transportation access. Main products polyurethane grouting foam, waterproof membrane, grouting injection packers, grouting pump, grease nipples and also parts. Capacity 120,000,000 pieces injection packers, All our products comply with international quality standards and are greatly appreciated in a variety of different markets throughout the world.Completely watertight, quality is our culture. customized order OEM service. We are warmly welcome your inquiry for long term business relationship, Mutual development, mutual benefits.