Regarding PCB companies related to Shenzhen

Here is the company names and their main products:

1. Zhending Technology Holdings Co., Ltd. (Shenzhen)
     Main Products: FPC, HDI

2. Shennan Circuits Co., Ltd.
     Main Products: PCB, PCBA, Packaging Substrates, Double-layer Busbar,      Rigid-Flex PCB

3. Lianeng Technology (Shenzhen) Co., Ltd.
     Main Products: High-density Interconnection Boards, Multilayer Printed      Circuit Boards

4. Sumitomo Electric Electronics Products (Shenzhen) Co., Ltd.
     Main Products: Flexible Printed Circuit Boards, Flexible Flat Cables, Wire      Harnesses for Machines

5. Jingwang Electronics Co., Ltd. (Shenzhen)
     Main Products: FR4 Printed Circuit Boards, Aluminum-based Circuit Boards,      Flexible Circuit Boards, HDI Boards, Rigid-Flex PCBs, High-end Electronic      Materials

6. Wuzhu Technology Co., Ltd. (Shenzhen)
     Main Products: Precision Double-sided, High-layer, HDI, Various Quick-turn      Boards, Metal Substrates, FPC Circuit Boards, Rigid-Flex Boards

7. Nitto Denko Precision Circuits Technology (Shenzhen)  Co., Ltd.
     Main Products: Flexible Circuit Substrates

8. Xingsen Fast Circuits Technology Co., Ltd.      (Shenzhen)
     Main Products: High-layer Backplanes, HDI Boards, High-frequency Boards,      High-TG Boards, Halogen-free Boards, Rigid-Flex Boards, Metal Substrates,      IC Carrier Boards

9. Chongda Technology Co., Ltd.
     Main Products: HDI, Thick Copper, Backplanes, Rigid-Flex PCBs, Buried      Capacitors

10. Jinghua Electronics (Shenzhen) Co., Ltd.
     Main Products: Double-sided and Multilayer Advanced Printed Circuit Boards

11. ChuanYi Computer (Shenzhen) Co., Ltd.
     Main Products: 2-14 Layer PCBs

12. Bomind Electronics Co., Ltd.
     Main Products: 2-32 Layer Circuit Boards, including HDI, Double-sided,      Multilayer, High-frequency, Aluminum-based, and Flexible/Rigid-Flex Boards

13. Xingying Technology (Shenzhen) Co., Ltd.
     Main Products: Circuit Boards, Computer Motherboards, Computer Adapter      Cards

14. Songgang Yunfeng Circuit Board Factory
     Main Products: Single-sided, Double-sided, Multilayer Circuit Boards

15. BYD Electronics (International) Co., Ltd.
     Main Products: Assembly Services (including High-level Assembly Services      and PCB Assembly Services)

16. Shenzhen Songwei Electronics Co., Ltd.
     Main Products: Silver Glue Plated Through-Hole Double-sided Boards, Copper      Glue Plated Through-Hole (2-6 Layer) Boards, LED Optoelectronics Boards,      PTH Double-sided Multilayer Boards

17. Yongjie Electronics (Shenzhen) Co., Ltd.
     Main Products: Single-sided, Double-sided Circuit Boards

18. Bao'an District Shajing Yabian Gaohui Circuit Board      Factory
     Main Products: Double-sided, Multilayer Circuit Boards

19. Shangda Electronics (Shenzhen) Co., Ltd.
     Main Products: Single-sided, Double-sided, Multilayer, and Rigid-Flex      Circuit Boards

20. Jingchengda Circuits Co., Ltd. (Shenzhen)
     Main Products: Single-sided, Double-sided Boards, Multilayer Boards,      Rigid-Flex Boards, FPC

21. Xinyu Tengyue Electronics Co., Ltd. (Shenzhen)
     Main Products: Single-sided, Double-sided Boards, Multilayer Boards,      Rigid-Flex Circuit Boards

22. Mingyang Circuit Technology Co., Ltd. (Shenzhen)
     Main Products: High-layer Boards, HDI Boards, Rigid-Flex Boards

23. Jinbaize Electronics Technology Co., Ltd. (Shenzhen)
     Main Products: High-end Specialty PCB Prototypes, Quick-turn Boards, Small      Batch Manufacturing

24. Enda Circuits (Shenzhen) Co., Ltd.
     Main Products: Double-sided and Multilayer Printed Circuit Boards,      High-frequency Microwave PCBs, Metal-based PCBs

25. Danbang Technology Co., Ltd. (Shenzhen)
     Main Products: Flexible FCCL, High-density FPC, Chip Packaging COF      Substrates, Chip and Device Packaging Products, Flexible Packaging      Functional Thermosetting Adhesives, Micro-adhesive Films

26. Sande Crown Precision Circuit Technology Co., Ltd.      (Shenzhen)
     Main Products: Flexible Circuit Boards

27. Daxin Circuit Boards Co., Ltd.
     Main Products: Single-sided, Double-sided, and Multilayer Circuit Boards

28. Zhuosui Electronics Technology (Shenzhen) Co., Ltd.
     Main Products: Double-sided and Multilayer PCBs

29. Fuchangfa Circuits Co., Ltd. (Shenzhen)
     Main Products: Double-sided Printed Circuit Boards, Multilayer Printed      Circuit Boards, Microwave High-frequency PCBs, Aluminum-based PCBs,      Buried/Blind Hole HDI, and Special Printed Circuit Boards

30. Chaoyue Technology Co., Ltd. (Shenzhen)
     Main Products: Double-sided, Multilayer Printed Circuit Boards

31. Zhongfu Circuits Co., Ltd. (Shenzhen)
     Main Products: HDI/Thick Copper/High-layer/Optical      Communication/Rigid-Flex/Mixed PCB

32. Xinda Electronics (Shenzhen) Printed Circuit Board      Factory
     Main Products: Carbon Film Plated Through-hole Boards, Double-sided Silver      Paste Plated Through-hole Boards, Carbon Film Printed Circuit Boards,      Single-sided Printed Circuit Boards

33. Xinghe Electronics Co., Ltd. (Shenzhen)
     Main Products: 2-16 Layer Circuit Boards, including Standard Double-sided,      Multilayer, Thick Copper, and High-frequency, Metal-based Specialty      Circuit Boards

34. Qinji Co., Ltd.
     Main Products: Single-sided, Double-sided, and Multilayer Printed Circuit      Boards

35. Zhiboxin Circuit Boards Co., Ltd. (Shenzhen)
     Main Products: Single-sided, Double-sided, Multilayer, HDI, and FPC      Products

36. Bomink Electronics Co., Ltd. (Shenzhen)
     Main Products: High-precision Multilayer Circuit Boards, Aluminum-based      Boards, Copper-based Boards, Rigid-Flex Boards

37. Qiangda Circuits Co., Ltd. (Shenzhen)
     Main Products: 2-32 Layer Circuit Boards, Specialty Boards

38. Aisheng Precision Circuit Technology Co., Ltd.      (Shenzhen)
     Main Products: Single-sided, Double-sided, Multilayer Rigid, Flexible, and      Rigid-Flex PCBs

39. Zhongruo Xinda Electronics Co., Ltd. (Shenzhen)
     Main Products: Flexible Circuit Boards (FPC) and Assemblies

40. Longteng Circuit Technology Co., Ltd. (Shenzhen)
     Main Products: High-precision Single-sided, Double-sided, Multilayer PCBs,      Aluminum-based Boards, Thick Copper Boards, Ceramic Boards, High-frequency      Microwave Specialty PCBs

41. Xunjiexing Circuit Technology Co., Ltd. (Shenzhen)
     Main Products: High-layer, High-precision PCBs

42. Hengbaoshi Circuit Boards Co., Ltd. (Shenzhen)
     Main Products: Single-sided, Double-sided, Multilayer Circuit Boards

43. Xingda Circuit Boards Co., Ltd. (Shenzhen)
     Main Products: Double-sided and Multilayer Circuit Boards

44. Xinmaolong Circuits Co., Ltd. (Shenzhen)
     Main Products: Double-sided, Multilayer, Single and Double-sided Flexible      Boards, Rigid-Flex Boards, Specialty Boards

45. Mutailai Circuit Technology Co., Ltd. (Shenzhen)
     Main Products: Multilayer Boards, High-frequency Boards, Metal-based      (Core) Boards, High-Tg Thick Copper Foil Boards, Planar Winding Boards,      Hybrid Material Boards, HDI, Rigid-Flex Boards, Specialty Substrates, and      Custom PCBs with Specific Requirements

46. Zhongxinhua Electronics Co., Ltd. (Shenzhen)
     Main Products: Single-sided, Double-sided, Multilayer Rigid,      Aluminum-based, Copper-based, and Ceramic-based Circuit Boards

47. Anyuanda Electronics Co., Ltd. (Shenzhen)
     Main Products: Flexible Printed Circuit Boards (FPC)

48. Yinghuida Optoelectronics Co., Ltd. (Shenzhen)
     Main Products: Single/Double-sided Touch Screen FPC

49. Huafeng Electrical Appliances Manufacturing Co., Ltd. (Shenzhen)
     Main Products: High-precision, High-density, High-reliability Small and      Medium Batch Double-sided/High-layer Printed Circuit Boards and Quick-turn      (Prototype) Boards

50. Yishengshun Electronics (Shenzhen) Co., Ltd.
     Main Products: High-precision Double-sided and Multilayer Circuit Boards

51. Hangsheng Circuit Technology Co., Ltd. (Shenzhen)
     Main Products: Double-sided, Multilayer Circuit Boards

52. Jingchuo Circuit Technology Co., Ltd. (Shenzhen)
     Main Products: Single/Double-sided, Multilayer, High-frequency Boards,      Impedance Boards, Aluminum-based Boards, HDI Boards

53. Zhongyang Technology Co., Ltd. (Shenzhen)
     Main Products: High-precision Double-sided, Multilayer Printed Circuit      Boards, Prototype Boards

54. Kaiqiang Electronics Co., Ltd. (Shenzhen)
     Main Products: Various FPC Flexible Printed Circuit Boards

55. Huayan Huihai Electronics Co., Ltd. (Shenzhen)
     Main Products: High-precision Double-sided and Multilayer Printed Circuit      Boards (PCBs)

56. Renchuangyi Electronics Co., Ltd. (Shenzhen)
     Main Products: 1-26 Layer FR4 Rigid Boards, Multilayer Rigid-Flex Boards

57. Leixinda Electronics (Shenzhen) Co., Ltd.
     Main Products: Single, Double-sided, and Multilayer Rigid Circuit Boards,      Aluminum-based Boards, High-frequency Impedance Boards, High TG Boards,      Thick Copper Boards, Teflon Boards

58. Chenghe Electronics Industrial Co., Ltd. (Shenzhen)
     Main Products: Various PCBs