Performance grade of Qingdao bolt[2020-06-24] Qingdao Haorui Steel Products Co., Ltd. mainly produces and sells standard fasteners and n...详情>>

The use of special-shaped rivets[2020-06-12] Special-shaped rivets are a commonly used professional riveting product. Qingdao Haorui St...详情>>

The current market situation of auto ...[2020-05-26] The scale of purchase demand, bargaining power and demand characteristics of products in t...详情>>

Basic introduction to carriage bolts[2020-02-18] Carriage bolt refers to round head square neck screw, English is carriage bolt...详情>>

What is the difference between specia...[2020-02-18] 1. Bolts and nuts without national standards are called special-shaped bolts and nuts, whi...详情>>

Bolts, cylindrical threaded fasteners...[2019-12-25] Bolts: mechanical parts, cylindrical threaded fasteners with nuts. A type of fastener cons...详情>>

Non-standard parts production, proces...[2019-12-25] Haorui Qingdao Non-standard Parts Manufacturing Co., Ltd. is non-standard parts, hexagon s...详情>>

The difference between high-strength ...[2019-12-19] Today I will tell you the difference between high-strength bolts and ordinary bolts. Bolts...详情>>

Numbering rules for auto standard screws[2019-12-19] Today, I will talk about the numbering rules of automobile standard screws. This standard ...详情>>

Standard Specification for Carriage B...[2019-12-19] Today, I will introduce to you several standard specifications commonly used for carriage ...详情>>