Great quality PCB for my ESP32-WROOM prototype. The 2-layer board (1.6mm) came with a clean blue solder mask and perfect HASL finish. Silkscreen is very sharp, which is essential as I am using 0402 and 0603 components for my RS-485 and I2C MUX sensor board. Mechanical dimensions are precise (52x51mm). No shorts found, and the pads for the SOIC-8 (RS-485) and SOT-23 (TVS) were easy to solder. Fast production and shipping to Czechia. Highly recommended for ESP32 developers.