... without bubbles,quality have been strict tested Code: LT-605Product Name: Pre-grinding Powder of Blue Enamel ... sieve, there will be 25-27g residue left, LT-605 is used by hand operation ,machinery enameling ... and spraying. 3,Indexes and Parameter:a. Fineness: LT-605 there will be 25-27g residue by sieving ... and without bubble structure after firing.4,Usage:LT-605: Soak the pre-grinding powder and water ...