Pretreating with metals or metal-containing compounds with magnesium or compounds thereof {magnesium or compounds thereof, not provided for in [CPC: C08F4/6543] or [CPC: C08F4/6546]}
Pretreating with metals or metal-containing compounds with magnesium or compounds thereof {magnesium or compounds thereof, not provided for in [CPC: C08F4/6543] or [CPC: C08F4/6546]}