alloy introdution: Zinc alloy have the proportion of light, hardness and strength, toughness, good density medium high heat, fine, melting point, through different formative 390 mould pressing blunt, we can make the alloy  buttons with diff

alloy introdution: Zinc alloy have the proportion of light, hardness and strength, toughness, good density medium high heat, fine, melting point, through different formative 390 mould pressing blunt, we can make the alloy  buttons with diff

alloy introdution: Zinc alloy have the proportion of light, hardness and strength, toughness, good density medium high heat, fine, melting point, through different formative 390 mould pressing blunt, we can make the alloy  buttons with diff

alloy introdution: Zinc alloy have the proportion of light, hardness and strength, toughness, good density medium high heat, fine, melting point, through different formative 390 mould pressing blunt, we can make the alloy  buttons with diff

alloy introdution: Zinc alloy have the proportion of light, hardness and strength, toughness, good density medium high heat, fine, melting point, through different formative 390 mould pressing blunt, we can make the alloy  buttons with diff

alloy introdution: Zinc alloy have the proportion of light, hardness and strength, toughness, good density medium high heat, fine, melting point, through different formative 390 mould pressing blunt, we can make the alloy  buttons with diff

alloy introdution: Zinc alloy have the proportion of light, hardness and strength, toughness, good density medium high heat, fine, melting point, through different formative 390 mould pressing blunt, we can make the alloy  buttons with diff

alloy introdution: Zinc alloy have the proportion of light, hardness and strength, toughness, good density medium high heat, fine, melting point, through different formative 390 mould pressing blunt, we can make the alloy  buttons with diff

alloy introdution: Zinc alloy have the proportion of light, hardness and strength, toughness, good density medium high heat, fine, melting point, through different formative 390 mould pressing blunt, we can make the alloy  buttons with diff

alloy introdution: Zinc alloy have the proportion of light, hardness and strength, toughness, good density medium high heat, fine, melting point, through different formative 390 mould pressing blunt, we can make the alloy  buttons with diff