1. Start with the ground plan
1. 从地面布局开始
Measure covered strips, row or bed spacing, openings, joins and total area. A roll choice without those measurements can create avoidable cutting or shortages.
测量覆盖条带、行距或苗床间距、开口、接缝和总面积。没有这些数据就选卷材，可能造成不必要裁剪或数量不足。
2. Match one of the twelve typical sizes
2. 匹配 12 种常用尺寸之一
0.4 × 200 m · 0.5 × 200 m · 0.6 × 200 m · 0.8 × 200 m · 1 × 200 m · 1.2 × 200 m · 1.5 × 200 m · 1.8 × 200 m · 2 × 100 m · 2.5 × 100 m · 3 × 100 m · 4 × 100 m
0.4 × 200 m · 0.5 × 200 m · 0.6 × 200 m · 0.8 × 200 m · 1 × 200 m · 1.2 × 200 m · 1.5 × 200 m · 1.8 × 200 m · 2 × 100 m · 2.5 × 100 m · 3 × 100 m · 4 × 100 m
3. Treat 70 g, 80 g and 90 g as printed labels
3. 把 70 g、80 g 与 90 g 作为目录标注
The supplied catalog does not state the unit basis. Quote requests and comparisons should carry a separate field asking the supplier to define that basis.
现有目录未说明单位口径。询价与比价表应单独设置字段，要求供应商明确该口径。
4. Verify only the published functions
4. 仅核对目录列明的功能
The catalog lists water and air permeability, weed suppression, wear resistance and cuttable handling. Do not add unsupported duration, percentage or certification claims.
目录列明透水透气、抑草、耐磨和可裁剪。不要补充无依据的持续时间、百分比或认证承诺。
5. Calculate quantity on the chosen roll basis
5. 按所选卷材口径计算数量
Use width × length, planned overlaps or joins, openings and the buyer’s own allowance. Record both roll count and total supplied area.
按宽度 × 长度、计划搭接或接缝、开口及买家自行设置的余量计算，并同时记录卷数与总供货面积。
6. Make the quotation close every gap
6. 让报价单补齐所有信息
The final comparison should show exact product reference, unit basis, roll dimension, quantity, included packing and destination basis on one page.
最终比价应在同一页显示准确产品参考、单位口径、卷材尺寸、数量、包含包装和目的地口径。