... )Certificate: CE,RHOS,LVD,EMC, ISO 3)Material: ABS board Air Bubble Whirlpool Massage Bathtub AUTME ABS/Acrylic Aqua Bath TubAB ... paper to polish the scratch surface and then coat it with car polishing wax, it will be restored after polishing the ... a soft cloth.3. How to remove the scales: clean with the soft acidic detergents such as lemon juice, vinegar sauce4 ...