New Telephone Numbers

Main Office
+49 (0) 2331 910 68-0


Managing director:
Peter Plobst
+49 (0) 2331 910 68-10


Application engineering / QW:
Katrin Wiebelhaus
+49 (0) 2331 910 68-30


Bettina Westig
+49 (0) 2331 910 68-28


Technique / Purchasing:
Andreas Rinke
+49 (0) 2331 910 68-23



Generel Terms and Conditions for the sale of goods and supplies of goods ans services for the H. D. Lenzen GmbH & Co. KG


These Conditions of Sale apply to all master supply agreements („agreement“) and all individual agreements and/or orders („orders“) with business owners, legal entities under public law and special funds under public law („partner“).
Our deliveries and services are provided exclusively on the basis of the terms and conditions below. The business terms and conditions of the partner, unless expressly recognised by us, have no validity.

General provisions

Full details of any verbal agreements will be immediately confirmed in writing by the contracting  partners.

Orders will not be binding until they are confirmed by us.

Information and illustrations contained in brochures and catalogues are, in accordance with usual trade practice, regarded as approximations unless they have been expressly described by us as  binding.

5. We are entitled to cancel this contract without notice if an important reason is presented. Such an important

reason is given if after the conclusion of the agreement it becomes apparent that our claims to payment are at risk because of a lack of financial capability of the partner und the partner upon request does not proof his capability within due time. Statutory rights of termination and cancellation and the rights according to no. 24 and 37 remain unaffected.

lf parts of these conditions of sale are or become invalid the effectiveness of the remaining provisions  is not affected.

Long-term and call contracts, price adjustment

Unlimited contracts  may be terminated by 12 months‘ notice.

In the event that any essential modification of labour costs, cost of materials or energy occurs with regard to long term contracts (contracts with a term of more than 12 months and unlimited contracts), each party to the contract shall be entitled to demand negotiations on an appropriate adjustment of prices in consideration of these factors.

Where a binding order quantity is not agreed, our calculation will be based on the non-binding order quantity expected by the partner for a specific period of time (target quantity). Where the partner purchases less than the target quantity,  we are entitled to increase the unit price by an appropriate amount. Where the partner purchases more than the target quantity,  we will reduce the unit price accordingly, provided that the partner has given notice of the surplus requirement not less than 6 months before delivery.

In the case of call supply contracts, unless otherwise agreed, binding quantities are to be notified to us by call not less than 6 months before the delivery  date. Any additional costs caused by our partner through late calling or subsequent amendments to the call in respect of time or quantity are to be borne  by the  partner; in this respect our calculation will prevail.


Each of the contracting partners will use all documents (which will also include samples, models and data) and information received by them under the  business relationship only for the contractual purpose, and maintain secrecy in respect of third parties with the same due care as applied to their own documents and information, where the other partner describes them as confidential or has an obvious interest in maintaining secrecy  in respect of such documents or information. 
This obligation commences on receipt of the first documents or information and ends 36 months after the end of the business relationship.

The obligation does not apply to documents and information which are generally known, or which were already known to the contracting partner on receipt  and where the contracting partner was not under obligation of secrecy, or where they are subsequently conveyed by a third party who is authorised to pass on such documents or information,  or where the documents or information are developed by the receiving contract partner without exploitation of documents or information of the other contracting  partner.

Drawings and specifications

Where one of the contract partners makes available to the other drawings or technical documents relating to the goods to be supplied, or to the manufacture of such goods, to the other partner, these remain the property of the contract partner submitting  them.

Samples and production materials

Manufacturing costs for samples and production materials (tools, moulds,  templates, etc.) will, unless otherwise agreed, be invoiced separately from the goods to be supplied. This also applies to production materials which have to be replaced as a  result of wear and  tear.

The costs for maintenance and proper storage, together with the risk of damage  to, or destruction of the production materials, will be borne by us.

Where, during the period of manufacture of samples or production materials, the partner abandons or terminates the co-operation, all manufacturing costs incurred up to that time will be borne by that partner.

Even where the partner has paid for them, the production materials remain our property at least until completion of the supply  contract. The partner is then entitled to reclaim the production materials, where a mutual agreement has been reached in respect of the time of delivery and the partner has fully complied with his contractual obligations.

We will keep the production materials free of charge for three years after the  final delivery to our partner. We will then request our partner in writing to make known his views on their further use within 6 weeks. Our duty of storage will end  if, within these 6 weeks, no such statement has been made,  or if no new order has been given.

Purchaser-related production materials may only be used by us for supply to third parties with the prior written agreement of our partner.


Our prices are in Euro, exclusive of turnover tax, packing, freight, carriage  and insurance.

Payment terms

All invoices are due for payment within 30 days of the invoice date.


Where we have indisputably supplied goods which are partly defective, our partner is nevertheless obliged to pay for the non-defective part, unless partial delivery is of no use to him. In other respects the partner may only set off payment against counter claims which have been determined by finaljudgement or are not disputed.

lf the payment terms are not met, we shall be entitled to bill interest on arrears at the rate charged to us by the bank for current account overdrafts, but at a minimum of 9 percentage points above the base interest rate of the European Central Bank at the time.

In the event of any delay in payment we may, after giving notice in writing to the partner, suspend our obligations until payments have been received.

Bills of exchange and cheques will only be accepted where this has been agreed, and only on account of performance and on condition that they may be discounted. Discount charges will be calculated from the due date for payment of the invoice amount. A guarantee for presentation of bills of exchange and cheques at the  due and proper time and for the lodging of a protest is excluded.


Unless otherwise agreed, we will deliver “ex-works“. Compliance with the delivery date or delivery period will be based on our notification of readiness for dispatch or collection.

The delivery period commences on dispatch of our order confirmation and will be extended as appropriate where the provisions of Article 56 below apply.

Partial deliveries are permitted within reason. They will be invoiced separately.

Production-related long or short deliveries are permitted within a tolerance of 10 per cent of the total order quantity. The total price will be adjusted accordingly.

Dispatch and transfer of risk

Goods which are notified as being ready for dispatch are to be taken over immediately by the partner. We are otherwise entitled, at our option, to dispatch  them or to store them at the cost and risk of the partner.

In the absence of any special agreement, we will select the transport method  and routing.

The risk  is transferred to the partner on handover to the railway, foruarding agent or freight carrier, or on commencement of storage, but in any case not later than departure from the factory or warehouse; this also applies if we have undertaken delivery.

Delay in delivery

lf we are able to anticipate that it will not be possible for the goods to be delivered within the delivery period, we will immediately inform the partner in writing of the reasons for this, and also if possible indicate the probable delivery date.

In the event of delivery being delayed by one of the circumstances as set forth in Article 57 below, or as a result of any action or omission on the part of the partner, an extension of the delivery period will be granted appropriate to the circumstances.

The partner is only entitled to withdraw from the contract if we are responsible for the delivery date not being met and the partner has allowed us a reasonable period of grace without result.

Reservation of title

We reserve the right of ownership in respect of the goods supplied until such time as all claims under the business relationship with the partner have been met.

The partner is entitled to sell these goods in the regular course of business, provided it meets its obligations arising from the business relationship with us in good time. However, it may neither pledge the reserved goods nor transfer ownership of them as security. lt is obliged to protect our rights if goods which are subject to reservation of title are resold on credit.

ln the event of breaches of its duties by the partner, in particular in the case of delayed payment, we shall be entitled, after a reasonable period of grace allowed to the partner for performance has elapsed without result, to withdraw from the contract and take back the goods; this shall not affect the statutory provisions concerning cases where it is not necessary to allow a period of grace. The partner shall be obliged to surrender the goods.

With immediate effect the partner assigns to us as security all claims and rights deriving from the sale or any hiring, for which we may have given the partner permission, of goods over which we have rights of ownership. We hereby accept the assignment,

Any working or processing of the goods which are subject to reservation of title shall at all times be carried out by the partner on our behalf. lf the goods which are subject to reservation of title are processed or inseparably mixed with other items not owned by us, we shall acquire joint ownership of the new product in the proportion of the invoice value of the goods which are subject to reservation of title to the other processed or mixed items at the time of processing or mixing.
lf our products are combined or inseparably mixed with other moveable items to form a single product and the other product is deemed to be the principal product, the partner shall transfer joint ownership to us on a pro rata basis, as far as the principal product is owned by it. The partner shall maintain ownership or joint ownership on our behalf. ln all other respects the same shall apply to the product created by processing or combination or mixing as to the goods which are subject to reservation of title.

The partner must inform us immediately of enforcement measures  being taken by  third parties in respect of the reserved goods by handing over to us the documents  required for any intervention.  This also applies to infringements  of any other  kind.

lf the value  of the existing securities exceeds the secured claims in total  by more than 20  per cent, we undertake, at the partner‘s request, to release securities  of our  choice in this  respect.

Material defects

The quality of  the goods  is determined exclusively by the agreed technical supply specifications. In the event of our  having to supply in accordance with  drawings, specifications, samples  and the like provided  by our partner, the  latter will take  over the risk of fitness for the intended use. The condition of the goods in accordance with the contract is determined as at the time of transfer of risk in accordance with Article 32 above.

When delivering we comply with the legal regulations as applicable in the  European Union and the Federal Republic of Germany, e.g. the REACH regulation  (regulation EU number 1907/2006), the law about the electrical and electronic equipment (Electrical and Electronic Equipment Act) and the electrical and electronic substance regulation (Electrical Substance Directive) as national implementation of the directive 2002/95/EG (RoHS l) and 2011/65/EU (RoHS ll) and the directive  20O2/96/EG (WEEE) and the End-of-life Vehicles ACT as national implementation of the EU directive 2000/53/EG.
We shall immediately inform the partner about relevant changes in the product in particular due to the REACH regulation, its supply availability, use or quality and shall in individual cases agree with the partner on suitable measures to be taken.

Any material defects  in respect ofany defect deriving from unsuitable or improper use, defective assembly  or operation by the partner or third parties,  normal wear and tear, defective or negligent handling, will also be excluded as the consequences of unsuitable modifications or repairs undertaken by the partner or third parties without our approval.
The  same shall apply to defects which only reduce the value of the goods or their fitness for their intended use to an insionificant extent.

Claims for material defects shall become statute-barred after  12 months. This  shall not apply where the law prescribes longer periods of time as mandatory, particularly for defects in a building and in a product which has been used in accordance with  its customary form of use for a building and has caused the latter to be defective. Sentence 1 shall also not apply for damages suffered from the injury of life, health or in case of deliberate acting or gross negligence or any other infringement of fundamental duties (i.e. duties that actually allow the duly execution of the agreement and on  which the partner usually can  rely upon)  by our representatives  or managers.

Where it is agreed that the goods are to be accepted after completion or that  initial samples are to be tested, notification of defects which could have been discovered by the partner under careful acceptance  or testing of  initial samples  is excluded.

We must be given the opportunity of assessing the notified defect. The goods complained of must be returned to us immediately; we will take over the transport costs where the notice of defect is justified. In the event of the partner failing to observe these obligations, or carrying out modifications of the goods which are complained of without our consent, he will lose any claims for material defects.

ln the event of notice of defect which is justified and made at the due and proper time,  we will,  at our choice, make improvements to the goods complained of or supply a reolacement free of defect.

In the event of our failing to meet these obligations, or failing to do so within a reasonable time in accordance with the terms of the contract, the partner may set in writing a final deadline within which we must fulfil our obligations.  In the event of this period expiring without result, the partner may demand reduction of the price, withdraw from the contract or himself carry out, or have the necessary subsequent improvement carried out by a third party at our cost and risk. There shall be no reimbursement of costs if the expenses increase because the goods have been brought to another place after delivery by us, unless this means that the goods  are being used as they were intended to be.

The partner has statutory rights of recourse against us only in so far as the partner has not reached any agreements with its customer which go beyond the statutory claims for defects. In addition, Article 48, last sentence, applies accordingly to the scope of the rights of recourse.

Other claims, liability

Unless otherwise specified below, any additional or more extensive claims by the partner against us are excluded. This shall apply in particular to claims for damages for a breach of duties arising from the obligation or from unlawful acts. We are therefore not liable for any damage not deriving from the delivered goods themselves. We are in particular not liable for any loss of profit or other financial losses by the partner.

The limitations of liability indicated above do not apply in the case of specific intent, gross negligence on the part of our legal representatives or managers, and in the event of culpable violation of fundamental contractual duties, i.e. duties that actually allow the duly execution of the agreement and on which the partner usually can  rely upon. In the event of culpable violation of significant contractual obligations we  are liable - other than in cases of specific intent or gross negligence on the part of our legal representatives or senior employees  - only for standard contractual  loss, or loss which might reasonably have been expected.

The limitation of liability  is also not applicable in those cases where there is liability in accordance withproduct liability laws in the case of defects in goods supplied for private use. lt is also not applicable in case of injury of life, body or health and in the absence of guaranteed characteristics, if, and insofar as the object of the guarantee was to cover the partner against any losses not deriving from the goods supplied themselves.

Insofar as our liability is excluded or limited, this is also applicable to the personal liability of our employees, workers, personnel, legal representatives and vicarious agents.

The legal provisions relating to burden of proof are not affected by this.

Force majeure

Acts of God, industrial disputes, disturbances, official measures, non-arrival of deliveries from our suppliers and other unpredictable, unavoidable and serious events will release the contracting partners from their duty to perform for the duration of the disturbance and to the extent of their effect. This is also applicable where these events occur at a time when the contracting partner concerned is in default, unless the delay is caused intentionally or gross negligently. The contracting partners are obliged, so far as is reasonable, to provide the necessary information immediately and in good faith to adjust their obligations to the changed conditions.

Place of performance, place of jurisdiction and applicable law

Unless otherwise indicated in the order confirmation, the place of performance is our principal place of business.

The place of jurisdiction for all  legal disputes, including any action relating to payment bills of exchange or cheques, is our principal place of business. We are also entitled to bring an action at the place of business of the  partner.

The contractual relationship is exclusively subject to the  laws of the Federal Republic of  Germany. The Application of the United Nations Convention on Contracts for the International Sale of  Goods of 11 April  1980 (CISG  - „Vienna  Sales Convention“)  is excluded.