Thin Wall Injection Molding
SJ Group has specialized in servicing customers with thin wall contract injection molding for over 35 years. Based on mold building experience, right now we have over 100 world class mold machining equipment and experienced project team. Multi-cavities and thin-wall molds playing an important role in packaging field. Caps of bottle is a massive demand currently, below tie bar is part ranged in thin wall packagin injection molding as well.
- Fast Delievery
- Quality Assurance
- 24/7 Customer Service
Product Introduction
SJ Group has specialized in servicing customers with thin wall contract injection molding for over 35 years. Based on mold building experience, right now we have over 100 world class mold machining equipment and experienced project team. Multi-cavities and thin-wall molds playing an important role in packaging field. Caps of bottle is a massive demand currently, below tie bar is part ranged in thin wall packaging contract injection molding as well.
Our Customers
Rely onus andyou won't regret
Many famous international packaging customer are our main customer, Aptar, Rieke,Jokey, Unilever,our customers include (Jokey, Unilever, and Rubbermaid), who have found our thin-wall packaging molds solution is superior in cycle time and quality while saving them around 10% cost from working with us.

SJ Group offer Strong Technical Support
SJ Group offer DFM and Mold flow report to support customer
DFM Report includes parting line, Gate location and type, Ejection, Part layout and mould structure, Draft angle check, Wall thickness analysis, Surface treatment, Engraving, Tolerance study, Part issue and suggestion etc.
Mold Flow Report includes Material Data, Process Suggestion, Runner and gate Design, Wall Thickness, Filling Video, Injection Temperature, V/P Switchover, Injection pressure, Clamping force, Shear Rate, Volumetric shrinkage, Sink marks, Weld line, Air trap, Deflection etc.


After sales service
We will be right there no matter when or where you need us
We have two after sales tool shops in USA and one in Mexico, one branch company in Germany, and six tool shops partners in Europe.

Capacity of design team
Sufficient design engineers with rich experience and efficiency
We have 50 design engineers; the molds design capability is 120pcs per month.
|
Engineer |
Member Numbers |
Tools Design capability per month (sets) |
Monthly capacity |
|
Senior Design Engineers |
10 |
3 |
30 |
|
Junior Design Engineers |
10 |
3 |
30 |
|
Design Engineers |
30 |
2 |
60 |
|
Total |
50 |
8 |
120 |
Certification
ISO9001,IATF16949,ISO13485,ISO14001
SJ Group factory has the certificates
.Mold Manufacturing: IQC, IPQC, OQC
Production: IQC,IPQC, FQC, OQC
Quality Tools: APQP, PPAP, FMEA, MSA, SPC, PPK/CPK, Control Plan, Flow-Chart, QC seven tools, QFD, IMDS, REACH, WEE
Special for medical production: Process validation,MSDS, FDA, CE, ROHS, COC, Batch tracking management, clean room management

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