1. who are we? We are based in Shandong, China, start from 2021,sell to North America(10.00%),South America(10.00%),Southeast Asia(10.00%),Africa(10.00%),Mid East(10.00%),Eastern Asia(10.00%),Central America(10.00%),Northern Europe(10.00%),South Asia(10.00%),Domestic Market(10.00%). There are total about 11-50 people in our office. 2. how can we guarantee quality? Always a pre-production sample before mass production; Always final Inspection before shipment; 3.what can you buy from us? semi trailer axles, air suspensions , chamber,wheel ,slack adjuster and other related items. 4. why should you buy from us not from other suppliers? We have a trailer parts production more than ten years the supply chain 5. what services can we provide? Accepted Delivery Terms: FOB,CIF,EXW; Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF; Accepted Payment Type: T/T; Language Spoken:English,Chinese 6.what is the certificate At present, the company can undertake CCS, ABS, BV, GL and other certification products