Our company  are willing to do R&D Design for different customers.
1.The module is 20pcs/string.User can put several strings in parallel connection,each string running a loop,Lest the nonuniform color cansed by the voltage drop,the cable section of main power supply should not less than 2.5mm.
2.The module number of each string is customizable or a single use.
3.Keep it in a well-ventilated enviroment,good for heat dissipation.
4.When connecting,gray wire to connect power -,white wire to connect + .Don't reverse.
5.Banned charged work.
6.Suggessted to use brand switching power supply with safety certificate.