Hebei Haokai Building Materials Co.,Ltd is established in 1998, our main product is weather strip wool pile, PU foam sealant. We have 60 sets wove machines, and 6 product lines. We can product 1 million meters seal strip and 6000 cartons sealant per day. So the delivery time almost 7 days for one 40hq. Another, our weather strip seals and sealant are produced in composite materials. We have very serious 24 hours quality control system. So we can certify the good and stable quality.