Technical conditions for thiourea gold extraction

1. Pretreatment of thiourea gold extraction materials
According to the experimental and industrial production practices of most researchers, thiourea is not sufficiently stable during the leaching operation, the consumption i

Wuhan Qingshan sanitation truck mounted GPS

The sweeping speed of the machine was too fast and the sweeping road passed by. On August 24th, 2011, the reporter learned from the Qingshan District Urban Management Bureau in Wuhan City that the 50 sanitation vehicles in the area were equipped with GPS to monitor the operation spee