WEIFANG BOGUAN WATERPROOF MATERIALS CO.,LTD has become world largest manufacturer of commercial and residential roofing.bitumen flash tape,Hatch cover tape,all kinds of surface adhesive membrane which can apply for concrete,wood,steel,plastic,APP/SBS bitumen membranes,Polythene membranes* Our success in growing the company to nearly $8 million in sales has been based on our unique philosophy of: ■Helping supportive distributors and roofing contractors to build their businesses and avoid hassles ■Helping property owners & architects to make their best and safest roofing choices provides reliable, value-added products and services to thousands of customers in a wide range of industries. we welcome the clients around world to my factory for business trip.