Communication engineering in the production of crystal head with TXL7-045, TXL7-046 two quota, in the communications engineering budget quota in the table shows: quota code (TXL7-045), the project name of the card to connect 4 pairs of stranded cables (wiring frame side) unshielded, unit (article), mechanics (0.06 man-days). Ration Code (TXL7-046), Item Name Snap 4-pair Stranded Cable (Patch Panel Side) Shielded, Unit (Article), Artisan (0.08 man-days). The above two quotas in TXL7-045 for the production of unshielded cable crystal head, TXL7-046 for the production of shielded cable crystal head.