Can I mix different models in one container?

Yes, different models can be mixed in one container, but the quantity of each model should not be less than MOQ.

How does your factory do regarding quality control?

We always pay great attention to quality control from the very beginning and every product was tested piece by piece before delivery.

Do you have quality certification?

Yes, we have CE, SGS, ISO, ect.

High Quality Black Drywall Screws

Name: High Quality Black Drywall Screws
Brand: TIANJIN GRAND METAL CO., LTD.
SKU: 2041051842

Tianjin, ChinaTIANJIN GRAND METAL CO., LTD.

US$930.00-980.00

5 Tons

Product profile

Material

Carbon Steel

Groove

Cross

Connection

Common Bolt

Standard

Tail

Self-Drilling/Self-Tapping

Thread

Fine Thread / Coarse Thread

Surface Treatment

Zinc Plated/Nick Plated/Black Phosphated

Application

Wood, Drywall, Gypsum Board

Transport Package

500g/Bag, 1kg/Bag, 5kg/Box, or Bulk N.W.20kgs/CTN

Specification

All size, M3.5X13-M4.8X200 / 6#x5/8~ 14#X3''

Trademark

GRANDMETAL

Origin

China

HS Code

73170000

Production Capacity

1000tons Per Month

Key features

Customizable Surface Treatment: Options include Black/Grey Phosphate, Zinc Plated, and Nick Plated.

Tailored Thread Types: Available in Fine Thread or Coarse Thread configurations.

Self-Drilling and Tapping: Tail type supports both Self-Drilling and Self-Tapping applications.

Wide Size Range: Lengths from 11-150mm and diameters M3.5-M6.3/#6-#14.

High Corrosion Resistance: Salt mist resistance time ranges from 24 to 1000 hours.

Customized Packaging: Carton print can be customized by professional designers.

OEM Service Available: Full OEM service is provided for product customization.

Quality Certification: Products hold CE, SGS, and ISO certifications.

Company profile

TIANJIN GRAND METAL CO., LTD.

Tianjin, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 10 Years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤2.09h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier presents itself as a specialized steel manufacturer and exporter with four production lines, 50 quality-control staff, and export markets in South America, Africa, and Australia. It reports customization from samples and lead times within 15 working days in both peak and off-season periods. However, the investigation identifies limited documented management evidence: no stated 3D design, ODM, SDK, or popular-brand OEM capability; no inventory, overseas warehouse, overseas showroom, overseas agent, or branch capability; and no participation in offline trade shows. Supplier-management, corrective-action, and complaint-handling procedures exist but lack written records, while quality-control testing equipment is reported as zero. Certification details are recorded only as “Others,” and the financial slices contain zero values for several recent indicators, making financial credibility difficult to verify.

Supplier typeThe supplier is explicitly described as a specialized steel manufacturer with an integrated research, manufacturing, and distribution system, while another slice states it is not a professional technical supplier. This supports classification as a steel manufacturing/export supplier rather than a professional technical-services supplier.

R&D capabilityThe supplier claims technical research strength and product-detection equipment, but the investigation records only one year of total R&D-engineer experience, no new products in the past year, and no 3D software design, ODM, SDK, or popular-brand OEM capability. The evidence shows limited demonstrated innovation capability.

Production capacityThe supplier reports four production lines, 50 quality-control staff, and a specialized steel manufacturing operation, with lead times within 15 working days in both peak and off-season. However, quality-control test equipment is reported as zero, and quality assurance and traceability statuses are unknown, so production capacity is supported but production-control maturity is not fully established.

Customization capabilityThe supplier explicitly provides customization from samples and accepts several quotation and payment terms, indicating an ability to support sample-based customization. No broader engineering, 3D-design, ODM, or SDK capability is reported.