Currently, I work with 2 tire suppliers. I have worked with them in the past and I am quite familiar with their facilities and products. Here is some information about them, so you can have a better understanding of where these tires come from.
1. SHANDONG ZHONGYI RUBBER CO., LTD.
SZR was founded in 2004 and is currently a 6.5 million square foot comprehensive professional enterprise with R&D center that employs 2800 people. SZR is equipped with world class mixing machines, extruding line, uniformity and dynamic balancing machines and utilizes Industry 4 technology. In 2016 SZR ranked 47 among the world’s tire manufacturers. (Tire Business rating).
In 2012, SZR and APIC company established CHINA-USA TIRE TECHNOLOGY COOPERATION RESEARCH CENTER. In 2015 SZR cooperated with TTA company to improve the design of tire structure, formula, process and enhance quality control. SZR is one of the few manufacturers in the world who masters run-flat and leak-proof technology.
SZR has been awarded ISO/IS16949, ISO14001, OHSAS18001, and ISO17025 certifications. Tires produced by this manufacturer comply with DOT, E-MARK, ECE R117, GCC, INMETRO, BIS, and SNI. Up to 18,000,000 tires are produced annually and they are sold in more than 100 countries all over the world.
2. CHINA NATIONAL TYRE & RUBBER GULLIN CO., LTD.
CNRC was established in 1965. In 1988 they produced the largest tire made in China at the time. In 2007 a 36.00R51 tire with an overall diameter of 3.23 m was produced by CNRC. It was the first giant all-steel radial OTR tire made in China, which was suitable for 170-ton trucks.
Now CNRC is the fifth largest tire and rubber manufacturer in the world and the largest one in China. CNRC has 25 plants in 14 countries and produces a wide range of tires including a heavy truck tire, commercial truck tire, bus tire, earthmover tire, OTR tire (off-the-road tire), industrial tire and farm tractor tire, that are sold in 160 countries.
CNRC is wholly owned by ChemChina company with annual sales over 15 billion dollars. CNRC controls multiple tire brands such as Pirelli and Aeolus! CNRC has been awarded ISO 9001, ISO 14001 and ISO/TS16949 certifications. Tires comply with CCC, DOT, E-MARK, ECE R117, GCC, INMETRO, BIS, and SNI. For more than 40 years, the CNRC team continues to endeavor to be a globally recognized manufacturer.