
Xiamen Sinoin Industry Co., Ltd. is A professional manufacturer of Commerical Vehicle parts. SINOIN is the supplier of KingLong, YuTong and Golden Dragon Which are excellent and famous brand lead in China bus market. With great advantage of SCR after treatment system parts, bus, truck And excavator spare parts in quality and price, we are keeping good Relationships with our customers in different countries. We offer bus interior and exterior design with professional team, ...