Grouper Fry culture circulating water system with utilization of small water body. Closed water cycle design with complete elimination of common disease during breeding process.

Easy sorting and uniform feeding to reduce the cannibalism and thus improve the survival rate.

Soft-shell crab is a very popular delicacy among high-end restaurants. Its market price is often 2-3 times that of ordinary crab, soft shell crab 
Aquaculture will be a short, fast and cost-effective breeding project. The soft-shell crab culture system of recycled water will break through the traditional household outdoor pond culture.

The concept of RAS uses the modern multi-level system technology. The System uses a sophisticated filtering and efficient separation of proteins, biological purification, UV treatment, water temperature series of water treatment technologies such as automatic control, and temperature, flow, etc. 

GOLDBILL combined cycle of RAS modular water treatment system uses the integrated core system. The designed has combined all the critical treatment processes  into one compact machine which are Mechanical filter (solid separation), protein separation, CO2 Degassing, biological filtration, nitrification and de-nitrification, ultraviolet UV disinfection, Oxygenator, and odor disinfection.

The technologies has completely resolved the cost of the traditional complex recycled water system design which caused the needs of large space, pipeline complexity, difficulty of maintenance, high operation costs as well as poor treatment capacity