The picture shows a batch of heat treatment fixture produced in March 2021, mainly including pallets trays 500*500*55, 850*654*125, 1200*350*50, 650*405*55, fixtures 650*399*375, 650* 399*375, 634*390*275, and bearing beam tooling, etc., the material is 1.4849, and the silica sol precision casting process is used.