58results about How to "Guarantee quality" patented technology

The invention relates to the technical field of circuit board production, and specifically a manufacturing method for a PCB electroplated with thick-gold partially. According to the manufacturing method, an outer layer circuit pattern is plated with copper in a flash plating manner before the outer layer circuit pattern is electroplated with tin, and the thickness of the copper layer plated in the flash plating manner is controlled to be 2-5[mu]m; the problem of color difference in the junction of the thick-gold position and other circuits can be solved, and meanwhile, the problem of the over-small pore diameter of a metalized pore in the multi-layered board caused by over-thick copper layer can be solved as well; in addition, the outer layer circuit pattern is electroplated with copper and tin; the multi-layered board can be subjected to conventional preprocessing in the tin electroplating process to remove the board surface tension of the multi-layered board so as to effectively prevent little bubbles from remaining in a contact region between a dry film and a windowed copper surface; therefore, the problem that the outer layer circuit pattern has a nick caused by the fact that tin cannot be electroplated on the outer layer circuit pattern is solved, and the quality of the finished product can be well ensured; the copper in the processes of electroless-copper-plating and full-board electroplating is plated based on the copper thickness requirement of the finished product outer layer circuit, so that the thickness difference between the thick-gold position and other copper surfaces can be reduced in the manufacturing process, and diffusion coating can be avoided consequently.

The invention provides a method for service flow transmission. The method comprises the steps that an application server receives service flow priority information sent by strategy control equipment;the application server determines a priority parameter of the service flow according to the received priority information of the service flow; wherein the application server carries the priority parameter of the service flow in the issued service flow data. Therefore, the service quality of the service flow in the network is controlled through the operator equipment, and the quality of the high-priority service is guaranteed.

The membrane electrolytic-reactors with four chambers and the elements to regulate degassing, is designed for the production of active pH-neutral disinfectant solutions. These solutions are electrolytically activated by weak brine and are intended for disinfection of drinking water and surfaces.