Frequently Asked Questions
Phone: 15986810439 (He Xiaodong, General Manager, same on WeChat), email: Jacobhe@szdofo.com; Factory address: Building 1, Tianxin Second Industrial Zone, Shangwu Avenue, Shangwu Community, Shiyan Street, Bao'an District, Shenzhen — we welcome scheduled visits and audits. Getting started is simple: provide product 3D drawings + material + demand volume, and we'll respond with a quote within 24 hours and a DFM manufacturability analysis report within 48 hours.
Yes. We handle personal care and medical product plastic parts molding. These products require high standards for appearance quality, surface treatment, assembly precision, and material compliance — exactly within our capabilities: two-shot molding and overmolding for appearance and tactile parts, in-house mold department for precision and fast modification response, surface treatment (spray painting, electroplating, silk screen printing, laser engraving) for finished appearance, and 2.5D vision measurement and color difference meter for dimension and color control. Send us your drawings for evaluation — quote and process recommendations within 24 hours.
Yes, and it is our standard practice. We typically engage from the client's product design stage, providing structural and process recommendations with three goals: ① Better product structure — manufacturability optimization from two-shot parting, wall thickness, draft angle, gating point, and insert position perspectives; ② Lower mold cost — reduce mold complexity and insert count through rational parting and structural simplification, avoiding extra costs from post-design modifications; ③ Faster time to market — DFM and design proceed in parallel, resolving risks before mold making, combined with 24-hour quotes, 48-hour DFM reports, and 15–25 day mold lead time for shorter overall cycles. Just send us your product concept or preliminary 3D drawings to get started.
A core client from when the factory was established in 2010 has been continuously ordering for 16 years. In the injection molding industry, switching suppliers is costly (requiring new molds, re-validation, re-breaking-in) — a client willing to cooperate for 16 consecutive years is the most direct proof of quality, lead time, and cooperation.
Within 24 hours of receiving 3D drawings and demand volume. For complex projects requiring multiple solution evaluations, we first provide a preliminary quote with process recommendations, then supplement a complete quote after details are confirmed.
Mainstream engineering plastics we can mold include PC (polycarbonate), ABS, PA (nylon), POM (acetal), TPU, and TPE. PC, ABS, PA, and POM are mainly used for hard plastic structural parts and appearance parts; TPU and TPE are used for overmolding soft layers, enabling soft-hard integrated molding.
Yes. The company holds Alibaba International Station physical factory certification and can accept overseas orders. Business contact: He Xiaodong 15986810439, email: Jacobhe@szdofo.com.
The company operates under ISO 9001 and IATF 16949 dual systems. From incoming material to shipping, products pass through four control points: IQC (incoming inspection) → first article confirmation → IPQC (in-process inspection) → OQC (outgoing inspection), with full traceability.
Yes. Within 48 hours of receiving complete 3D drawings, we issue a DFM (Design for Manufacturing) analysis report, identifying risk points from draft angle, gating, deformation, and two-shot bonding surface perspectives, with modification recommendations — solving problems before mold making to avoid later modification costs and delays.
Yes. Our capacity consists of two parts: 20 in-house YIZUMI machines plus approximately 20 long-term cooperative capacity for single-color overflow and auxiliary processes. Core two-shot molding operations are 100% in-house, never outsourced. Cooperative capacity quality and lead times are uniformly controlled — clients only deal with DoFO. Multiple mold sets are made in parallel by the in-house mold department (18 machines), with mold lead time 15–25 days and mass production 7 days.
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