... -6,4.00-8, 3.50-8, 6.50-8Other type available:Company profile: Qingdao Quantong Industrial Co,. Ltd was established in ... in the production of barrow tyres, motorcycle tyres, bicycle tires, special tires, tubeless wheel, solid wheel ,foam wheels and variety of ... wheelbarrow, hand trolleys, tool carts and other metal products Company based on the idea of Esteem science, sticking to “Science ...