PENNINT, CO., LTD in China, a professional waterproofing materials and system supplier. the main products contains bitumen, PVC & TPO waterproofing membrane etc. Please feel free to contact with us if you have needs. We look forward to cooperating with you! PENNINT, CO., LTD in China, a professional waterproofing materials and system supplier. the main products contains bitumen, PVC & TPO waterproofing membrane etc. Please feel free to contact with us if you have needs. We look forward to cooperating with you!