A rectangular pit is located on the ground, covered with a steel grating cover, and the edges are fixed with angle steel frames. A yellow metal guardrail is erected in front of the pit; the guardrail is made of welded square tubing with an intact paint finish. The pit is used for loader to directly feed raw materials. The raw materials fall into the pit through the grating and are then transferred to the silo by the conveyor equipment at the bottom of the pit. A small amount of construction materials are scattered on the ground, and several templates are laid flat in front. The workshop ceiling is equipped with lighting tubes, providing ample light. The overall equipment has a modular layout.