compensa on, except that a custodian who keeps the deposited ar cle free of charge shall not bear the liability for compensa on if he can prove that the destruc on, damage, or loss is not caused by his inten onal or grossly negligent act. Ar cle 898 A depositor shall declare to the custodian if he deposits money, nego able securi es, or other valuable ar cles, and the custodian shall examine them for accep on, or seal them; where the depositor fails to make such a declara on, if the said ar cle is destructed, damaged, or lost, the custodian may make compensa on based on a rate for ordinary ar cles. Ar cle 899 A depositor may collect the ar cle he deposited in custody at any me. Where there is no agreement between the par es on the period for the custody or the agreement is unclear, the custodian may, at any me, request the depositor to collect the ar cle under his custody. Where there is an agreement on the period for the custody, without special cause, the custodian may not request the depositor to collect the ar cle before such period expires. Ar cle 900 Upon expira on of the period for custody or where the depositor collects the ar cle he deposits in custody before expira on of such period, the custodian shall return the ar cle and the proceeds accrued thereof to the depositor. Ar cle 901 Where money is deposited in custody, the custodian may return the money in the same currency and amount. Where other fungible goods are deposited in custody, the custodian may return the goods of the same kind, quality, and quan ty in accordance with the agreement. Ar cle 902 Under a contract for non-gratuitous custody, the depositor shall pay the safekeeping fee to the custodian at a me agreed by the par es. Where there is no agreement between the par es on the me limit for payment of the safekeeping fee or the agreement is unclear, if it cannot be determined according to the provisions of Ar cle 510 of this Code, the payment shall be made at the me the ar cle under custody is collected. Ar cle 903 Where a depositor fails to pay the safekeeping fee or the other expenses, the custodian has the right to retain the ar cle under custody under a lien, unless otherwise agreed by the par es. Chapter XXII Warehousing Contracts Ar cle 904 A warehousing contract is a contract under which a warehouser stores the goods delivered by the depositor for which the depositor pays the warehousing fee. Ar cle 905 A warehousing contract is formed when there is a consensus of expression of intent between the warehouser and the depositor. Ar cle 906 Where dangerous goods such as in ammable, explosive, toxic, corrosive, radioac ve, or perishable ar cles are to be stored, the depositor shall state the nature of the said goods and provide relevant informa on thereof. Where a depositor violates the provisions of the preceding paragraph, the warehouser may refuse to accept the goods for storage, or take appropriate measures to avoid losses, and the expenses thus incurred shall be borne by the depositor. A warehouser that stores dangerous goods such as in ammable, explosive, toxic, corrosive, and radioac ve ar cles shall have the corresponding warehousing condi ons. Ar cle 907 A warehouser shall examine the goods before accep ng them in accordance with the agreement. Where a warehouse, upon examining the goods, nds that the goods to be stored are inconsistent with the agreement, he shall promptly no fy the depositor. A warehouser shall bear the liability for compensa on if, a er he has examined and accepted the stored goods, the goods are not in conformity with the agreement ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti fl fi ti ti fl ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ti ft 97