• supply, qualification, annual capacity, logistics, area of advantage
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♪ b factory, aa class, 50,000 tons, 48hda, car manufacturing
C group a, 30,000 tons, 72hda, construction
D-tech, b-class, 10,000 tons of cylindrical, customized, electron, cylindrical
| e trade | c | flexibility | 3-5 days | small and medium mass |
Mechanical processing of quartile sands
Different equipment adaptation options:
1 ️⃣ number control machine bed: it is recommended to use 0. 3-0. 6 mm medium particle (reduced blade wear)
2 water grinder: mixed with 0. 1-0. 2 mm supersaline (upgrading surface light)
3-mode cast: use 1. 0-2. 0 mm architectural sand (enhanced disillusionment)
Cost control cases:
By adjusting the sand mix, a gear plant replaced 0. 8 yuan/kg of white sand with 0. 5 yuan/kg of construction grade sand + 3 per cent of super fine sand blends, resulting in annual purchase cost savings of 280,000 yuan (data source: ima study)
Overall procurement process
1 request for quotation phase: at least 3 quotations (including details of taxes and charges)
2 ️⃣ sample test: request for 200 g free trial suit
3 contract signing: a clear time limit for processing quality objections (recommendation 72 hours)
4 arrival and acceptance: priority testing:
- sand mobility (water washing test)
- iron oxide content (blackcard comparison)
- cereal circle (projector measurement)
Viii. Sectoral front-line technology inventory
Breakthrough progress:
1 ️⃣ nanometer grade of stone and sand: a laboratory in the city has achieved 0. 02 mm production volume production
2 graphite sand from cleaning: graphite coating (reduce 30% of equipment cleaning frequency)
3 ️⃣ intelligent spectrometry system: ±0. 05 mm class particle size control through laser radar
Investment proposals: small and medium-sized buyers could consider a phased upgrade (new water test technology with a 5 per cent budget for the first year proposed)
Q& a
Q1: how can you identify real and fake stone sand
A: infiltration with rare hydrochloric acid (reals without bubbles, fakes with clay content)
Q2: how do winter transport block
A: 0. 3 per cent anti-freezing agent added (compatibility with vendor confirmed in advance)
Q3: how does bulk procurement obtain discounts
A: proposal for an annual framework agreement (with discounts of 8-12 per cent)
Recent policy interpretation
In august, the industrial stone and sand group standards were added:
1 ️⃣ heavy metal limit: lead 0. 005 ppm (3 times harsher than the old standard)
2 packaging requirements: food-grade pe knitting bags must be used (cost increase of 8 per cent)
Environmental penalties: 5-500,000 yuan for non-compliance fine. Paragraph
Procurement action guide:
1 quality check standards updated immediately (focus on new national marker indicators)
2. Reassess existing vendor compliance
Policy adjustments to the 5-8 per cent budget set aside
Procurement benefits: response to the concern to obtain the white paper on mechanical processing of stones and sands (including 20 supplier contact details and forecast price tables)
Recommendation of the latest offer for the wholesale price of the quartz cinnamon for mechanical processing
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