... HT200-300 Hquality assured,fast delivery Special holes& T/V/U Slots can be made at surface area ... s requirement).Besides:♦We provide special tapped holes and T/V/USlots at the top working surface for ... execution,GB/T22095-2008 , respectively is 0,1,2,3.Grade0, Grade1. On each side of the plate ... regulations execution, GB/T22095-2008 respectively is 0,1,2,3. Type(mm)Precision Grade(μm) Grade 0 Grade ...