欧美多毛肥胖老妇做爰,97在线视频人妻无码,(无码视频)在线观看,亚洲综合色成在线播放

Find your markets

Choose your language

中文 English

It has excellent comprehensive performance

It has a series of excellent characteristics, such as high hardness, high wear-resisting strength and good toughness, heat and corrosion resistance

COLD WORK TOOL STEEL

High cost performance tungsten molybdenum high speed steel

It not only has the characteristics of high hardness, high wear resistance, corrosion resistance and high temperature oxidation resistance of ceramic materials, but also has good toughness of metal materials

Suitable for all applications requiring high temperature wear and metal melting

Plastic product

It has good thermal stability of hardness, abrasion resistance and corrosion resistance

To provide more value-added services to China