I BELIEVE YOU MUST HAVE WATCH THOSe VIDEOS WELL. IT WORKS PERFECTLY FOR ALL KINDS OF MATERIALS . fuel tank, broken pipes, water tanks, hose washer, pvc, tiles, ceramics, plastic, roof, zinc/ rubber, concrete.
20 YEARS SOLUTION.
VERY HIGH TEMPERATURE RESISTANCE. PERFECT FOR THE AFRICA KIND OF WEATHER CONDITION. NO MELTING , NO REMOVAL. WATERPROOF.