Shenzhen Grandtop Automation Co., Ltd was founded in 2005,we are a manufacturer who are specialized in PCB Assembly (SMT, DIP, AI) and electronic product final assembly (EMS) in the top market for global customers.
We have more than 10 years of SMT manufacturing experience, well appointed SMT ,DIP and assembly lines, offering one stop service from SMT,FPC,DIP,EMS, conformal coating, testing, final assembly, component procurement ,design, peripheral products support and so on. we are equipped with High-speed and accurately SMT Equipment ,and we provide a whole range of SPI,AOI,ICT,FCT,X-RAY,ROHS and aging testing for products. All ourshop floors are dust free, all lines are lead free, we are ISO9001 certified company.
Our service :
PCB and SMT assembly with one-stop service
FR4, high TG FR4, high frequency, alum, FPC
Number of layers
Min.thickness for inner layers
(Cu thickness are excluded)
Bow and twist
no more than 7/1000
Outer Cu weight
Inner Cu weight
PTH hole tolerance
NPTH hole tolerance
Min solder mask clearanace
100% Functional test
X-ray,AOI Test,Functional test
one-stop service electronic manufacxturer service
ISO13485, ISO9001, IATF16949
Tolerance of pcb
Max size of finish board
NO MOQ (1pcs)
HASL,ENIG,immersion silver,immersion tin,OSP…
Our Location :
Why Choose Us:
Q1: What is needed for quotation?
A: For pcb, we need quantity, Gerber file and Technic requirements(material,surface finish treatment, copper thickness,board thickness ,...)
For PCBA: we need PCB information, BOM, (Testing documents...)
For full assembly product: PCBA Information and product buid information
Q2: Are you a manufacture?
A:Yes,we are. Warmly welcome to visit our factory at any time
Q3: Are my files safe?
A:Your files are held in complete safety and security.We protect the intellectual property for our customers in the whole process.. All documents from customers are never shared with any third parties.
Q4:What is the delivery time?
Normal: 5-10 workingdays for samples, 10-35working days for bulk production.
For Urgent project, We can arrange preferential processing and control the delivery time as you request
Q5. Do you have MOQ?
There is no MOQ in Grandtop.We are able to handle Small as well as large volume production with flexibility.