Talk Directly to the Engineers Who Will Run Your Program.
Since 2005, in-house mold making and 41 injection machines under one roof in Shenzhen — send your drawings for precision mold, injection molding or IC Tray projects and get engineer-reviewed feedback within one working day.
Four Direct Channels — All Reach the Same Team.
Whether it's a mold RFQ, an IC Tray project or a mold transfer inquiry, every channel below lands with Aric (our English-speaking business lead) and the engineering team — no sales gatekeeper, no lead-scoring queue.
Attach STEP/IGES/PDF files up to 25 MB. Engineering-reviewed reply within one working day.
Call during China office hours (GMT+8). English-speaking on every call — no translation delay.
For quick questions across time zones. Send a photo of the drawing or part directly — media messages supported.
The fastest path when your project has clear volume, timing and material specs — form routes straight to engineering.
What to Include in Your First Message.
The clearer the input, the faster the engineering answer. Everything below is optional — even a rough sketch and a target volume gets you a useful first reply.
Come See the Equipment Running Your Program.
Plant visits are welcomed — we arrange airport pickup, hotel booking and English-speaking technical staff for a walkthrough of the mold shop, injection floor and quality lab. Remote video walkthroughs available when travel isn't on the table yet.
Shenzhen Changsheng Mould Ltd.
Songgang Sub-district, Baoan District,
Shenzhen, Guangdong, China 518105
(Xinhaoshun Zhizao Innovation Park, Building 2, Unit 101)
Hong Kong Int'l (HKG) · 2 hr by car / ferry
Real Programs Across Our Three Business Lines.
Three representative programs covering precision molds, injection molding and IC Tray OEM — customer names withheld under NDA, but the engineering path and measured result are exactly as delivered.
Precision IC Tray with 99.7% Incoming Pass Rate
Semiconductor tray required tight pocket dimensional stability across humidity swings; selected low-moisture-absorption engineering resin, controlled cooling profile, and 100% CMM sampling on pocket geometry per lot — adopted as primary IC Tray supplier and scaled to 5 additional device families.
2K Handle with Zero Cosmetic Reject on Trial Run
Handheld personal-care device with rigid-soft two-shot handle for grip; custom 2K mold on a 160T double-shot machine, PC + TPE material stack with matched shrink rates — first-shot dimensional approval, zero cosmetic reject on the trial run, sustained production for over 18 months.
Under-Hood Housing Warpage Fixed on Mold Transfer
Housing transferred from previous supplier with 0.4mm warpage failing customer-line assembly; redesigned cooling channels, adjusted gate location and re-tooled core inserts — warpage reduced to 0.08mm across all cavities, first-shot approval within 4 weeks of transfer, program launched on original schedule.
Feedback From Engineering & Procurement Teams.
Real feedback from customers who have shipped programs with CS Molds — names withheld under NDA, but roles, industries and program contexts are exactly as stated for reference verification.
Their DFM review caught a wall-thickness issue on our IC Tray pocket that would have caused warpage in production. That single review saved us a full mold-revision cycle and pulled our program launch back on schedule.
We transferred a legacy mold from another supplier and expected weeks of rework. CS Molds returned a condition report in five days, adjusted the cooling channels, and had first-shot approval within three weeks. Production has been stable since.
Their engineering team pushed back on our original gate design for the 2K handle and explained exactly why. We revised, they tooled, and the trial parts hit tolerance on the first shot. That's the kind of upfront honesty we look for in a supplier.
Documented Systems Your Auditors Can Verify.
A full certification stack backed by material compliance and customer-specific documentation — ready for regulated programs without a scramble when your quality auditor asks for evidence.
IATF 16949:2016
International Automotive Task Force quality management system for automotive-grade programs — PPAP-ready documentation and lot-level traceability supported for tier-one supplier requirements.
ISO 9001:2015
Quality Management System covering mold engineering, injection production, inspection and delivery — the baseline your procurement team expects on file for any qualified supplier.
ISO 14001:2015
Environmental Management System covering resource use, emissions and waste management — meeting the sustainability procurement requirements increasingly written into overseas OEM contracts.
China Key Mold Export Enterprise
Government-designated key enterprise for mold export — official recognition of manufacturing capability and export track record within China's precision mold industry.
Answers Before You Even Send the First Email.
The questions overseas buyers ask most often when getting in touch with CS Molds — so you know what to expect before you write to us.