PP hollow corrugated sheet industry is currently an emerging sunrise industry, Tongsan is committed to the development and improvement for pp hollow corrugated board making machine. At present, our hollow grid production equipment has been sold to Iran, Mexico, Dominica, Sri Lanka and many places in domestic. Our machines are highly praised by customers for high production efficiency, excellent workmanship and good service quality. At present, we have a variety of models from 1220mm to 2450mm, warmly welcome customers to visit our factory for machine running.