Square Manhole Covers

Dongying Panlong is a high-tech enterprise which integrates technological research, design, production and sale composite manhole cover, trench cover, drain grate, tree grate etc. It is located in Chinese second largest oilfield, Shengli Oilfield, center of the Yellow River Delta City, Dongying City, Shandong Province.

As a major manufacturer of polymer covers, we adopt the mould pressing craft of the composite material to serve a huge variety of markets. Our products which with the advantages of lighter in weight, high intensity, good anti-theft, high durability, corrosion-resistance, long life as well as perfect shape, have powerful life-force. Including polymer manhole cover series, polymer trench cover series, drain grate series, tree grate series, grass cover series etc. With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in heavy road, walking Road and other industries.

Our company persists in the principle of Quality First and Clients Supreme all along and trusts its clients with quality products, and truehearted management ideas. This idea runs through every aspect of operation, from company management to product manufacturing, quality control and inspection; From employee training and technique requirement to customer service, which makes us different from others.

Since its establishment with excellent product quality and perfect technical service, the company has won high praise among the majority of customers. We are sure you will find it worthwhile to choose us as your supplier.

Our products are in reliable quality with competitive price. We warmly welcome every friend both domestic and abroad to share the mutual development.