Appearance:
1, drum face should level off, clean, can not have split;
2, paper should level off, there can be no wrinkles, folds, deformity, hole, various spots, sand, hard block and other effects using paper disease;
3, the colour and lustre of paper should be consistent;
4, Each volume joints shall not be more than one, and have joint volume is not greater than the whole order volume by 20%, joint marking should be colored paper.
Environmental requirements, in line with the ROHS directive, phthalates, EN71-3 standard.
Packing: inside to use thin film bag packing, paper packaging, moisture-proof, waterproof.
Other indicators according to gb/line mark, or the enterprise standard approved by the company. Base paper appearance, colour and lustre according to provide the pattern on both sides shall prevail.