Qingdao GuoYu Machinery Co., Ltd is one of the best motorcycle spare parts suppliers in China. My company own an excellent profession technical personnel, adopt a high-quality steel material , mainly produce series specification of motorcycle chain, industrial chain, agricultural chain and sprocket etc. The product has already pass the ISO9001 quality system ***** for continuous several years drive several quality examinaiton centers in the province, city, country…etc. take out check combine qualified. With lend a well-found equipments inside the factory, the forunner&＃039;s work skill level and the examination means of standard make my company gradually become a factory house that profession produces the chain export. "The trustworthiness is originally" is the prestige principle of my factory. "The quality is the life of business enterprise"is that the development of my company is original *****&＃039;s way namely humality, we are continuously making great effort, not break creatively also in the meantime sincere hope and the public friend develop comity in order to common development, common progress!