Qingdao Sinostone Co., Ltd. Is professional tyre marketing and manufacturing company. We are specialized in various kinds of tyres. The newly developed radial OTR sizes 4000R57, 3700R57, 3600R51, 3300R51, 2700R49, 2400R35, 1800R33 E-4 pattern are available, as well as E-3, L-5 and L-5s patterns for radial OTR tires. We can also supply truck bus radial tire, bias OTR tire, forklift tire, skid steer and trailer tire to overseas market. Our products are conformed to DOT & ECE certifications. We sincerely welcome customers from all over the world.