Guide to Common Mistakes in Purchasing Clear Plastic Round Bowls

I. Errors in Product Specifications and Quality Standards Selection

1.1 Incorrect Material Selection Leading to Usage Risks

• PP material: High temperature resistance up to 130℃, microwaveable, good chemical stability, and elongation at break of 300%, making it the best choice for overall performance;
• PS material: High transparency but poor heat resistance (≤70℃), weak impact resistance, brittle texture, and easily broken;
• PET material: Heat resistance of only 70℃, easily deformed at high temperatures, may release plasticizers and heavy metals, and is not reusable.

1.2 Specification and Size Deviations Leading to Inconvenience

1.3 Misjudgment of Load-Bearing Performance Leads to Safety Hazards

1.4 Transparency and Color Issues Affect Product Image

1.5 Uneven Thickness Leads to Unstable Quality

1.6 Neglecting the Latest National Standards and Industry Regulations

II. Supplier Selection and Evaluation Errors

2.1 Lax Supplier Qualification Review Leads to Compliance Risks

• Business License: The business scope should include "production of plastic products for food contact," etc., to avoid operating outside the scope of the license;
• Food Production License (SC Certificate): This is a core qualification.  The product details and procurement type must match, and the license must be valid and have completed the annual review;
• Production License: Products included in the licensing scope require the corresponding certificate;
• Environmental Protection Qualifications: Wastewater and exhaust gas treatment must meet standards, and an environmental impact assessment report or pollution discharge permit may be required;
• Quality Inspection Report:  Proof that the product meets quality standards. Common Purchasing Mistakes: Failure to request complete qualification documents, failure to verify the authenticity of qualifications, neglecting material standards (e.g., PE must comply with GB 9687), and failure to assess the supplier's production and quality management capabilities.

2.2 Lack of On-Site Inspection Leads to Quality Control Issues

• Production environment and facilities: Whether it's a dust-free workshop, whether equipment is neatly arranged and has maintenance records, whether material management is orderly, and whether it meets food safety production requirements;
• Quality management system: Whether it has passed certifications such as ISO 9001, the accuracy and frequency of testing equipment, the process for handling non-conforming products, and clear factory inspection (appearance, structure, performance) and type testing (all items);
• Production capacity: The advanced nature and stability of equipment, the ability to handle large orders and peak seasons, standard delivery times, and contingency plans.

2.3 Price-Driven Approach Neglecting Quality Leads to Increased Hidden Costs

2.4 Inadequate Risk Control in Payment Methods

• Advance payment risks:  The advance payment is too high (e.g., 20,000 RMB including equipment and sealing film costs) or too low (e.g., 10%, where the seller's loss exceeds the advance payment), or payment is made without a signed contract;
• Payment method risks: Payment to a personal account without a collection authorization (potentially involving misappropriation of funds or tax evasion), using insecure payment methods, or mistakenly paying into a fraudulent account;
• Settlement risks: Payment is made before acceptance testing, advance payments are not tracked for performance, and the final payment percentage is low or there is no quality guarantee deposit.
• Suggested payment method: Pay a 30-40% deposit upon contract signing, entrust the advance payment to the raw material supplier, retain a 10-20% quality guarantee deposit (paid after acceptance testing), and establish a comprehensive payment approval process.

2.5 Lack of After-Sales Service Guarantee

• Return, exchange, and compensation mechanisms for quality problems;
• Warranty period and scope;
• After-sales response time and processing procedures;
• Technical support and training services.

III. Contract Clauses and Legal Compliance Deficiencies

3.1 Incomplete Contract Clauses Leave Legal Risks

• Missing basic clauses: Vague product information (using "similar," "approximately"), failure to specify quality standards, acceptance procedures, and delivery time and location;
• Unclear payment terms: Failure to specify unit price and total price (whether including taxes, fees, and shipping costs), unclear payment methods and deadlines, and lack of payment conditions (such as payment after successful inspection);
• Missing clauses on breach of contract and dispute resolution: Failure to specify circumstances constituting a breach of contract (late delivery, substandard quality) and the standard for liquidated damages, and a lack of dispute resolution methods.
• Standard contracts should include: details of the subject matter (specifications, quantity, quality standards), price and payment methods, rights and obligations of both parties, delivery and acceptance, liability for breach of contract, and dispute resolution.

3.2 Unclear Quality Standards Lead to Difficulties in Acceptance

• Compliance with GB/T 18006.1-2025 and corresponding material standards (e.g., PP complying with GB 9688);
• Specific technical indicators (volume deviation ≤5%, load-bearing capacity change rate ≤5%, etc.);
• Requirement for the supplier to provide a quality inspection report.

3.3 Vague Delivery Time and Location Clauses

• Tableware must be washed and disinfected before use, and food that is consumed directly must be packaged in non-toxic and clean packaging;
• Recycled materials are prohibited in products, and raw materials must be food-grade (PP, PE, etc.);
• Packaging must be labeled with "for food contact," "material," "production date," "manufacturer," etc.;
• Hygiene indicators must meet standards (total migration ≤ 10mg/dm², potassium permanganate consumption ≤ 10mg/kg, heavy metals ≤ 1mg/kg, aromatic primary amines not detected, decolorization test negative).

3.5 Neglecting Environmental Compliance Risks Facing Penalties

• Shanghai: Fines of 10,000-100,000 yuan for using prohibited or restricted products;
• Hainan: Fines of 30,000-200,000 yuan for selling prohibited or restricted products, with fines equal to the value of the goods if it exceeds 200,000 yuan;
• Bengbu: Fines equal to or less than the value of the goods for producing or selling prohibited or restricted products.
• Procurement should avoid: purchasing ultra-thin plastic bags with a thickness of <0.025mm, foamed tableware, and other prohibited or restricted products, and products without environmental labels (biodegradable/recyclable symbols).

IV. Price Negotiation and Cost Control Pitfalls

4.1 Insufficient Identification of Price Traps Leading to Economic Losses

• False low-price traps: Rice husk tableware claiming to be "all-natural" but containing 20% ​​plastic (0.25-0.5 yuan/set), 7-cent foamed tableware containing toxic additives, and low-priced products often having problems such as substandard load-bearing capacity and leakage;
• Complex price structure traps: Quotations hiding packaging fees, transportation costs, and taxes, using complex pricing methods (such as by weight without specifying density), and including price adjustment clauses;
• Material confusion traps: PS masquerading as PP, false advertising of "biodegradable," and using recycled materials in production.

4.2 Errors in Calculating Discounts for Bulk Purchases

• Small batches (<1000 units): 0.3-0.5 RMB/unit;
• Medium batches (1000-10000 units): 0.2-0.3 RMB/unit;
• Large batches (>10000 units): 0.1-0.2 RMB/unit.

4.3 Neglecting Transportation Costs Increases Total Costs

4.4 Neglecting Hidden Costs Affects Overall Profitability

• Quality problem costs: customer complaint compensation, brand damage, return and exchange costs, dispute resolution costs;
• Storage costs: warehouse rent, spoilage and deterioration, capital tied up, facility depreciation;
• Compliance costs: environmental fines (10,000-100,000 RMB), testing and certification fees, regulatory compliance costs;
• Opportunity costs: loss of potential customers, lost orders, missed opportunities with high-quality suppliers.

4.5 Payment Method Risks Increase Financial Costs

 

V. Delivery and Logistics Management Vulnerabilities

5.1 Delivery Time Delays Affect Normal Operations

5.2 Insufficient Prevention of Transportation Damage Risks

5.3 Insufficient Packaging Protection Causes Product Damage

5.4 Quantity Counting Errors Affect Cost Accounting

5.5 Unclear Acceptance Standards Lead to Quality Disputes