Certain technological development of HTSC ceramics YBa₂Cu₃O_7–δ, which were in progress at the Institute in Physical-Technical problems some time ago, are described briefly. A technique of secondary sintering ("resintering") of this ceramics in the eutectic melt 3BaCuO₂ +2CuO (3B2C) essentially reduces the volumetric fraction of inter granular media, and improves superconducting properties of bulk ceramic samples. In its turn, a technique of "painting" a substrate Y₂CuO₅ (Y211) with 3B2C-composition allows one to obtain superconducting films with the thickness up to 200 microns. The films with good shielding properties are steady in the environment and may be of any arbitrary shape. High-T_c SQUIDs are one of useful applications of this type of technology.