date: Thu, Sep 29, 2011 at 10:31 PM subject: High precision deep groove ball bearings 62-types Dear Mr. Zhan, Please study well our performance requirements for cooperation Point 1-7 in High quality ball bearings. Only when you are able to reach each points with o.k, so you are the right partner of cooperation: 1. Can you reach Z4,V4 noise-level and P5-quality-standard in tolerance and running-accuracy ? 2. Will you accept our own Brand-marking = KBT / VC on frontface