Precautions for crane beams in steel structures: 1. When the span of the crane trusses and heavy-duty working crane beams is equal to or greater than 12M, or when the span of light...

Fishing boats are vessels used to catch and collect aquatic animals and plants, and also include auxiliary vessels for processing, transporting, and breeding aquatic products. Mode...

Stainless steel pipe processing technology and related methods is a major manufacturer of stainless steel materials in China. It specializes in stainless steel pipes, stainless ste...

In order to implement the "Regulations on the Supervision and Administration of Medical Devices" (State Council Order No. 650, hereinafter referred to as the "Regula...

1. Box parts: Box parts are geometric workpieces composed of basic geometric elements (points, lines, surfaces, cylinders, cones, balls), including gearbox processing parts, engine...